Read my lipstick | Opinion | Chemistry World

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window.dataLayer.push({'Synopsis':'Our modern Valentine’s Day may seem all love and romance, but this holiday demands celebrants make a series of crucial decisions. 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if (call.status !== 200) { return } else { var html = await call.text(); if (html == "") { return } else { document.getElementById('inlineRelated').innerHTML = "<h3>Related stories</h3><ul>" + html + "</ul>" } } })() }, "CSSClass":"", "MinHeight":400 }, //NEWLETTER ONECLICK WIDGET - Signed out - RHC or inline { "Type":"CustomContent", "Position":"PreferRight", "Sticky":false, "Group":"Widget_NL_Oneclick_SignedOut", "Repeat":false, "InsertIfNoRHCSpace":false, "HTML":"<div class=\"newsletterSignup-widget\" data-ajax-load-content=\"\" data-url=\"/newslettersingleclick?wid=2084\" data-cache-bust=\"true\"></div>", //"CustomEventName":"NLSignedOutInit", "Javascript":function(elem,container,slotconfig,adcounter,counter,repeat){ console.log('newsletter single click with span'); $(window).trigger('abacus:readjusrhcheight',[event, elem]); }, //"CSSClass":"newsletterSignup", "MinHeight":350 }, //NEWLETTER ONECLICK WIDGET - Signed in or out - Re:action { "Type":"CustomContent", "Position":"PreferRight", "Sticky":false, "Group":"Widget_NL_Oneclick_Reaction", "Repeat":false, "InsertIfNoRHCSpace":false, "HTML":"<div class=\"newsletterSignup-widget\" data-ajax-load-content=\"\" data-url=\"/newslettersingleclick?wid=2084\" data-cache-bust=\"true\"></div>", //"CustomEventName":"NLSignedOutInit", "Javascript":function(elem,container,slotconfig,adcounter,counter,repeat){ console.log('newsletter single click with span'); $(window).trigger('abacus:readjusrhcheight',[event, elem]); }, //"CSSClass":"newsletterSignup", "MinHeight":350 }, //PUZZLES NEWLETTER ONECLICK WIDGET - Signed out - RHC or inline { "Type":"CustomContent", "Position":"PreferRight", "Sticky":false, "Group":"Widget_NL_Puzzles_Oneclick_SignedOut", "Repeat":false, "InsertIfNoRHCSpace":false, "HTML":"<div class=\"newsletterSignup-widget\" data-ajax-load-content=\"\" data-url=\"/newslettersingleclick?wid=2085\" data-cache-bust=\"true\"></div>", //"CustomEventName":"NLSignedOutInit", "Javascript":function(elem,container,slotconfig,adcounter,counter,repeat){ console.log('newsletter single click with span'); $(window).trigger('abacus:readjusrhcheight',[event, elem]); }, //"CSSClass":"newsletterSignup", "MinHeight":350 }, //NEWLETTER WIDGET - Signed out - RHC or inline { "Type":"CustomContent", "Position":"PreferRight", "Sticky":false, "Group":"Widget_NL_SignedOut", "Repeat":false, "InsertIfNoRHCSpace":false, "HTML":"<div class=\"nl-promo-wrapper\"><div class=\"nl-promo-img\"><img alt=\"email newsletter\" src=\"https://d2cbg94ubxgsnp.cloudfront.net/Pictures/200xAny/P/web/o/c/j/email_newsletter.png\"></div><div class=\"nl-promo-text\"><h2>Our newsletters</h2><p>Create your free account to receive personalised content alerts and Re:action, our weekly newsletter of the top chemical science stories handpicked from a range of magazines, journals and websites alongside insight and analysis from our expert editorial team.</p></div><div class=\"nl-promo-button\"><a class=\"button\" href=\"https://account.chemistryworld.com/register?campaigncode=CWregnlpromo2304&returl=https%3A%2F%2Fwww.chemistryworld.com%2F\">Create account</a></div></div>", "CustomEventName":"NLSignedOutInit", "Javascript":function(elem,container,slotconfig,adcounter,counter,repeat){ $(window).trigger('abacus:readjusrhcheight',[event, elem]); }, //"CSSClass":"newsletterSignup", "MinHeight":350 }, //NEWLETTER ONECLICK WIDGET - Industry { "Type":"CustomContent", "Position":"PreferRight", "Sticky":false, "Group":"Widget_NL_Oneclick_Industry", "Repeat":false, "InsertIfNoRHCSpace":false, "HTML":"<div class=\"newsletterSignup-widget\" data-ajax-load-content=\"\" data-url=\"/newslettersingleclick?wid=2097\" data-cache-bust=\"true\"></div>", //"CustomEventName":"NLSignedOutInit", "Javascript":function(elem,container,slotconfig,adcounter,counter,repeat){ console.log('newsletter single click with span'); $(window).trigger('abacus:readjusrhcheight',[event, elem]); }, //"CSSClass":"newsletterSignup", "MinHeight":350 }, //GAM ADVERT - MPU Bottom (repeats, in RHC or inline) { "Type":"GAMAdvert", "Position":"PreferRight", "Group":"Ads", "AdUnit":"/97414310/MPU_Bottom", "RefreshDelaySeconds":30, "Sticky":true, "Repeat":true, "Refresh":false, "InsertIfNoRHCSpace":false, "AdUnitSizesInlineDesktop":[[336,280],[300,250],[200,200],[250,250],[320,100],[320,50]], "AdUnitSizesInlineMobile":[[336,280],[300,250],[200,200],[250,250],[320,100],[320,50]], "AdUnitSizesRHC":[[300,1050],[300,600],[120,600],[160,600],[336,280],[300,250],[200,200],[250,250],[320,100],[320,50]], "CSSClass":"wvc-custom-ad", "ExtraHTML":"<div class=\"ad-text\">Advertisement</div>" } ], "Overrides":[ // StoryType-[type code] // StoryCategoriesCodes-[code] // StoryFormat-[code] // StoryLayout-[code] // StoryWidth-[full-width / standard] // StoryId-[code] // StoryFullNavPath-[nav code level 1]-[nav code level 2]-[nav code level …] { //If Full width story, increase spacing before first insertion" "Conditions":"StoryWidth-full-width", "Operator":"And", "Settings":{ "DesktopElementSpacingFirst":6, "MobileElementSpacingFirst":6 } }, { //If Category is quick/cryptic crossword =Insert Oneclick widget at bottom" "Conditions":"StoryCategoriesCodes-115804,StoryCategoriesCodes-115803", "Operator":"Or", "Settings":{ "RemoveGroupsInline":"Ads,Related_Content,Widget_NL_SignedIn,Widget_NL_Oneclick_SignedOut,Widget_MP", "AddGroupsInline":"Widget_NL_Puzzles_Oneclick_SignedOut", "DesktopElementSpacingFirst":1, "MobileElementSpacingFirst":1 } }, { //If Category is wordoku =Insert Oneclick widget after "Conditions":"StoryCategoriesCodes-583", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads,Related_Content,Widget_NL_SignedIn,Widget_NL_Oneclick_SignedOut,Widget_MP", "AddGroupsInline":"Widget_NL_Puzzles_Oneclick_SignedOut", "DesktopElementSpacingFirst":3, "MobileElementSpacingFirst":3 } }, { //Sign up to reaction page = Insert Oneclick widget after 1 para "Conditions":"StoryId-4016206", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads,Related_Content,Widget_NL_SignedIn,Widget_NL_Oneclick_SignedOut,Widget_MP", "AddGroupsInline":"Widget_NL_Oneclick_Reaction", "DesktopElementSpacingFirst":1, "MobileElementSpacingFirst":1 } }, { //If category or nav is industry = Select industry one-click widget "Conditions":"StoryCategoriesCodes-39,StoryFullNavPath-101608", "Operator":"Or", "Settings":{ "RemoveGroupsAll":"Widget_NL_SignedIn,Widget_NL_Oneclick_SignedOut", "AddGroupsAll":"Widget_NL_Oneclick_Industry" } }, { //If Category="Remove advert slots (inline)" "Conditions":"StoryCategoriesCodes-115793", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads" } }, { //If Category="Remove all slots (inline)" "Conditions":"StoryCategoriesCodes-115794", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads,Related_Content,Widget_NL_Oneclick_SignedOut,Widget_NL_Oneclick_Industry,Widget_NL_Puzzles_Oneclick_SignedOut,Widget_NL_Oneclick_Reaction" } }, { //If Category="Remove related reads" "Conditions":"StoryCategoriesCodes-115798", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Related_Content" } } /* { //If Category="Slots (inline) - Off" "Conditions":"StoryCategoriesCodes-999999", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads,Widgets" } }, { //If Category="Advert slots (all) - Off" "Conditions":"StoryCategoriesCodes-999999", "Operator":"And", "Settings":{ "RemoveGroupsAll":"Ads" } }, { //If Category="Advert slots (RHC) - Off" "Conditions":"StoryCategoriesCodes-999999", "Operator":"And", "Settings":{ "RemoveGroupsRHC":"Ads" } }, { //If Category="Advert slots (inline) - Off" "Conditions":"StoryCategoriesCodes-999999", "Operator":"And", "Settings":{ "RemoveGroupsInline":"Ads" } }*/ ] } typeof advanceData!=='undefined'? EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll = "Widget_NL_Oneclick_SignedOut" : EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll = "Widget_NL_SignedIn" </script> <style> .story-inlinecontent-placeholder-inner .newsletterSignup-widget { margin-bottom: 2rem; } </style> <script> $(window).trigger("wvcfe:globalenhancedadvertsinit", [event, EnhancedAdvertisingConfig]); (function(w, d) { if(window.NodeList && !NodeList.prototype.forEach) { NodeList.prototype.forEach = Array.prototype.forEach; } d.addEventListener('DOMContentLoaded', function(event) { if(EnhancedAdvertisingConfig.Slots) { var enhAdDebug = false; if( localStorage.getItem('enh-ads-debug') == 'true' ) enhAdDebug = true; var sp = 'story-inlinecontent-placeholder'; var supportedTypes = ['gamadvert', 'customcontent']; var supportedPositions = ['inline', 'preferright', 'right']; var isDesktopResolution = w.matchMedia("screen and (min-width: 1023px)").matches; var isStoryFullLayout = d.body.classList.contains('story-full-layout'); var inlineCounter = 1; var rhcCounter = 1; var inlineAdCounter = 1; var rhcAdCounter = 1; var ticking = false; $('#story.enhanced-advertising .storytext > div.webonly').each( function(){ var t = $(this); t.replaceWith( t.html() ); }); var storyCustomContentPlaceholders = d.querySelectorAll('#story.enhanced-advertising .storytext > *'); var maxRHCSlotsToFitIn = 0; var matches = function(el, selector) { return (el.matches || el.matchesSelector || el.msMatchesSelector || el.mozMatchesSelector || el.webkitMatchesSelector || el.oMatchesSelector).call(el, selector); }; var getClosestParent = function(elem, selector) { for(; elem && elem !== d; elem = elem.parentNode) { if(matches(elem, selector)) { return elem; } } return null; }; var storyType = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryTypeCode && el.StoryTypeCode != 'null'; }).map(function(el) { return 'StoryType-' + el.StoryTypeCode; }).join('') : ''; var storyFormat = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryFormatCode && el.StoryFormatCode != 'null'; }).map(function(el) { return 'StoryFormat-' + el.StoryFormatCode; }).join('') : ''; var storyLayout = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryLayoutCode && el.StoryLayoutCode != 'null'; }).map(function(el) { return 'StoryLayout-' + el.StoryLayoutCode; }).join('') : ''; //PWVD-780 var storyWidth = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryWidth && el.StoryWidth != 'null'; }).map(function(el) { return 'StoryWidth-' + el.StoryWidth; }).join('') : ''; var storyFullNavPath = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryFullNavPath && el.StoryFullNavPath != 'null'; }).map(function(el) { return el.StoryFullNavPath; }).join('').split('|').filter(function(el) { return el && el != 'null'; }).join('-') : ''; var storyCategoriesCodes = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryCategoriesCodes && el.StoryCategoriesCodes != 'null'; }).map(function(el) { return el.StoryCategoriesCodes; }).join('').split('|').filter(function(el) { return el && el != 'null'; }).map(function(el) { return 'StoryCategoriesCodes-' + el; }) : []; var storyID = dataLayer ? dataLayer.filter(function(el) { return el && el.StoryID && el.StoryID != 'null'; }).map(function(el) { return 'StoryID-' + el.StoryID; }).filter(function(el) { return el && el != 'null' && el != 'StoryID-'; }).join('') : ''; storyFullNavPath = (storyFullNavPath ? 'StoryFullNavPath-' + storyFullNavPath : ''); var allDataLayerFilters = storyCategoriesCodes.concat([storyType, storyFormat, storyLayout, storyWidth, storyFullNavPath, storyID]).map(function(m) { return m.toLowerCase(); }); EnhancedAdvertisingConfig.RHCMinHeightForSlotInsert = (EnhancedAdvertisingConfig.RHCMinHeightForSlotInsert || 800); EnhancedAdvertisingConfig.RHCMinHeightForStickyAd = (EnhancedAdvertisingConfig.RHCMinHeightForStickyAd || 250); if('Overrides' in EnhancedAdvertisingConfig) { if(EnhancedAdvertisingConfig.Overrides) { var overrides = EnhancedAdvertisingConfig.Overrides; var andOperator = function() { return (override.Conditions.toLowerCase().split(',').filter(function(el) { return el && el; }).every(function(el) { return allDataLayerFilters.indexOf(el) != -1; })); }; var orOperator = function(el) { return (override.Conditions.toLowerCase().split(',').filter(function(el) { return el && el; }).some(function(el) { return allDataLayerFilters.indexOf(el) != -1; })); }; for(var i = 0, iL = overrides.length; i < iL; i++) { var override = overrides[i]; var operatorFilter; if(override.Operator && override.Operator.toLowerCase() == 'and') { operatorFilter = andOperator; } else { operatorFilter = orOperator; } if(operatorFilter()) { if('Settings' in override) { if(override.Settings) { var settings = override.Settings; if('AddGroupsAll' in settings && settings.AddGroupsAll && isString(settings.AddGroupsAll)) { if(settings.AddGroupsAll.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsAll = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsAll += ',' + settings.AddGroupsAll.toLowerCase(); } } if('AddGroupsInline' in settings && settings.AddGroupsInline && isString(settings.AddGroupsInline)) { if(settings.AddGroupsInline.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsInline = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsInline += ',' + settings.AddGroupsInline.toLowerCase(); } } if('AddGroupsRHC' in settings && settings.AddGroupsRHC && isString(settings.AddGroupsRHC)) { if(settings.AddGroupsRHC.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsRHC = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsRHC += ',' + settings.AddGroupsRHC.toLowerCase(); } } if('RemoveGroupsAll' in settings && settings.RemoveGroupsAll && isString(settings.RemoveGroupsAll)) { if(settings.RemoveGroupsAll.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll += ',' + settings.RemoveGroupsAll.toLowerCase(); } } if('RemoveGroupsInline' in settings && settings.RemoveGroupsInline && isString(settings.RemoveGroupsInline)) { if(settings.RemoveGroupsInline.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsInline = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsInline += ',' + settings.RemoveGroupsInline.toLowerCase(); } } if('RemoveGroupsRHC' in settings && settings.RemoveGroupsRHC && isString(settings.RemoveGroupsRHC)) { if(settings.RemoveGroupsRHC.toLowerCase().toLowerCase().indexOf('[all]') != -1) { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsRHC = '[all]'; } else { EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsRHC += ',' + settings.RemoveGroupsRHC.toLowerCase(); } } if('Repeat' in settings && isBoolean(settings.Repeat)) { EnhancedAdvertisingConfig.StoryDynamicSlotsRepeat = settings.Repeat; } if('DesktopMaxInlineSlots' in settings && isNumberPositiveOrZero(settings.DesktopMaxInlineSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMaxInlineSlots = settings.DesktopMaxInlineSlots; } if('MobileMaxInlineSlots' in settings && isNumberPositiveOrZero(settings.MobileMaxInlineSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMaxInlineSlots = settings.MobileMaxInlineSlots; } if('DesktopMinRHCSlots' in settings && isNumberPositiveOrZero(settings.DesktopMinRHCSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMinRHCSlots = settings.DesktopMinRHCSlots; } if('MobileMinRHCSlots' in settings && isNumberPositiveOrZero(settings.MobileMinRHCSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMinRHCSlots = settings.MobileMinRHCSlots; } if('DesktopMaxRHCSlots' in settings && isNumberPositiveOrZero(settings.DesktopMaxRHCSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMaxRHCSlots = settings.DesktopMaxRHCSlots; } if('MobileMaxRHCSlots' in settings && isNumberPositiveOrZero(settings.MobileMaxRHCSlots)) { EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMaxRHCSlots = settings.MobileMaxRHCSlots; } if('DesktopElementSpacingFirst' in settings && settings.DesktopElementSpacingFirst && isNumberPositive(settings.DesktopElementSpacingFirst)) { EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopElementSpacingFirst = settings.DesktopElementSpacingFirst; } if('MobileElementSpacingFirst' in settings && settings.MobileElementSpacingFirst && isNumberPositive(settings.MobileElementSpacingFirst)) { EnhancedAdvertisingConfig.StoryDynamicSlotsMobileElementSpacingFirst = settings.MobileElementSpacingFirst; } if('DesktopElementSpacing' in settings && settings.DesktopElementSpacing && isNumberPositive(settings.DesktopElementSpacing)) { EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopElementSpacing = settings.DesktopElementSpacing; } if('MobileElementSpacing' in settings && settings.MobileElementSpacing && isNumberPositive(settings.MobileElementSpacing)) { EnhancedAdvertisingConfig.StoryDynamicSlotsMobileElementSpacing = settings.MobileElementSpacing; } if('RHCMinHeightForSlotInsert' in settings && settings.RHCMinHeightForSlotInsert && isNumberPositive(settings.RHCMinHeightForSlotInsert)) { EnhancedAdvertisingConfig.RHCMinHeightForSlotInsert = settings.RHCMinHeightForSlotInsert; } if('RHCMinHeightForStickyAd' in settings && settings.RHCMinHeightForStickyAd && isNumberPositive(settings.RHCMinHeightForStickyAd)) { EnhancedAdvertisingConfig.RHCMinHeightForStickyAd = settings.RHCMinHeightForStickyAd; } if('CollapseEmptyDivs' in settings && isBoolean(settings.CollapseEmptyDivs)) { EnhancedAdvertisingConfig.CollapseEmptyDivs = settings.CollapseEmptyDivs; } } } } } } } var paragraphThreshold = isDesktopResolution ? EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopElementSpacing : EnhancedAdvertisingConfig.StoryDynamicSlotsMobileElementSpacing; var paragraphFirstThreshold = isDesktopResolution ? EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopElementSpacingFirst : EnhancedAdvertisingConfig.StoryDynamicSlotsMobileElementSpacingFirst; var maxInlineSlots = isDesktopResolution ? EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMaxInlineSlots : EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMaxInlineSlots; var minRHCSlots = isDesktopResolution ? EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMinRHCSlots : EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMinRHCSlots; var maxRHCSlots = isDesktopResolution ? EnhancedAdvertisingConfig.StoryDynamicSlotsDesktopMaxRHCSlots : EnhancedAdvertisingConfig.StoryDynamicSlotsMobileMaxRHCSlots; var allAddGroups = (EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsAll ? EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsAll : "").split(',').filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); var allAddInlineGroups = [].concat(allAddGroups, (EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsInline ? EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsInline : "").split(',')).map(function(m) { return m.toLowerCase(); }).filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); var allAddRHCGroups = [].concat(allAddGroups, (EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsRHC ? EnhancedAdvertisingConfig.StoryDynamicSlotsAddGroupsRHC : "").split(',')).map(function(m) { return m.toLowerCase(); }).filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); var allRemoveGroups = (EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll ? EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsAll : "").split(',').filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); var allRemoveInlineGroups = [].concat(allRemoveGroups, (EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsInline ? EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsInline : "").split(',')).map(function(m) { return m.toLowerCase(); }).filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); var allRemoveRHCGroups = [].concat(allRemoveGroups, (EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsRHC ? EnhancedAdvertisingConfig.StoryDynamicSlotsRemoveGroupsRHC : "").split(',')).map(function(m) { return m.toLowerCase(); }).filter(function(f) { return f; }).filter(function(x, i, a) { return a.indexOf(x) === i; }); EnhancedAdvertisingConfig.Slots = EnhancedAdvertisingConfig.Slots.map(function(x, i) { x.Used = false; x.Index = i; if('Type' in x) { if(supportedTypes.indexOf(x.Type.toString().toLowerCase()) != -1) { x.Type = x.Type.toString().toLowerCase(); } else { x.Type = 'customcontent'; } } else { x.Type = 'customcontent'; } if('Position' in x) { if(supportedPositions.indexOf(x.Position.toString().toLowerCase()) != -1) { x.Position = x.Position.toString().toLowerCase(); } else { x.Position = 'inline'; } } else { x.Position = 'inline'; } if('CSSClass' in x) { x.CSSClass = x.CSSClass.toString().split(' ').join(',').split(',').filter(function(e) { return e && e; }).join(' '); } else { x.CSSClass = ''; } if('Group' in x) { x.Group = x.Group.toString().split(' ').join(',').split(',').filter(function(e) { return e && e; }).join(','); } else { x.Group = ''; } if('Sticky' in x) { if(x.Sticky.toString().toLowerCase() == 'true') { x.Sticky = true; } else { x.Sticky = false; } } else { x.Sticky = false; } if('InsertIfNoRHCSpace' in x) { if(x.InsertIfNoRHCSpace.toString().toLowerCase() == 'true') { x.InsertIfNoRHCSpace = true; } else { x.InsertIfNoRHCSpace = false; } } else { x.InsertIfNoRHCSpace = false; } if('MinHeight' in x) { x.MinHeight = parseInt(x.MinHeight.toString()); } else { x.MinHeight = 0; } if('NoBackfill' in x) { if(x.NoBackfill.toString().toLowerCase() == 'true') { x.NoBackfill = true; } else { x.NoBackfill = false; } } else { x.NoBackfill = false; } if('Refresh' in x) { if(x.Refresh.toString().toLowerCase() == 'true') { x.Refresh = true; } else { x.Refresh = false; } } else { x.Refresh = false; } if('ExtraHTML' in x) { if(x.ExtraHTML.toString()) { x.ExtraHTML = x.ExtraHTML.toString(); } else { x.ExtraHTML = ''; } } else { x.ExtraHTML = ''; } if('CustomEventName' in x) { if(x.CustomEventName.toString()) { x.CustomEventName = x.CustomEventName.toString(); } else { x.CustomEventName = ''; } } else { x.CustomEventName = ''; } if('Javascript' in x) { if(x.Javascript) { if(typeof x.Javascript === 'function') { x.Javascript = x.Javascript; } } else { x.Javascript = ''; } } else { x.Javascript = ''; } if('AdUnit' in x) { if(x.AdUnit.toString()) { x.AdUnit = x.AdUnit.toString(); } else { x.AdUnit = ''; } } else { x.AdUnit = ''; } if('AdUnitSizesInlineMobile' in x) { x.AdUnitSizesInlineMobile = x.AdUnitSizesInlineMobile; } else if('GAMAdUnitSizesInlineMobileDefault' in EnhancedAdvertisingConfig) { x.AdUnitSizesInlineMobile = EnhancedAdvertisingConfig.GAMAdUnitSizesInlineMobileDefault } if('AdUnitSizesInlineDesktop' in x) { x.AdUnitSizesInlineDesktop = x.AdUnitSizesInlineDesktop; } else if('GAMAdUnitSizesInlineDesktopDefault' in EnhancedAdvertisingConfig) { x.AdUnitSizesInlineDesktop = EnhancedAdvertisingConfig.GAMAdUnitSizesInlineDesktopDefault; } if('AdUnitSizesRHC' in x) { x.AdUnitSizesRHC = x.AdUnitSizesRHC; } else if('GAMAdUnitSizesRHCDefault' in EnhancedAdvertisingConfig) { x.AdUnitSizesRHC = EnhancedAdvertisingConfig.GAMAdUnitSizesRHCDefault; } if('RefreshDelaySeconds' in x) { x.RefreshDelaySeconds = parseInt(x.RefreshDelaySeconds.toString(), 10); } else { x.RefreshDelaySeconds = 30; } return x; }); var storyInlineContent = EnhancedAdvertisingConfig.Slots.filter(function(el) { return el && (el.Position.toLowerCase() == "inline" || ((!isDesktopResolution || isStoryFullLayout) && el.Position.toLowerCase() == "preferright")) && (el.Group || "").split(',').filter(function(subel) { return subel && subel != undefined; }).map(function(subel) { return subel.toLowerCase(); }).some(function(subel) { return allAddInlineGroups.indexOf(subel) != -1 || allAddInlineGroups.indexOf('[all]') != -1; }) && !(el.Group || "").split(',').filter(function(subel) { return subel && subel != undefined; }).map(function(subel) { return subel.toLowerCase(); }).some(function(subel) { return allRemoveInlineGroups.indexOf(subel) != -1 || allRemoveInlineGroups.indexOf('[all]') != -1; }); }); var storyRHCContent = isDesktopResolution ? EnhancedAdvertisingConfig.Slots.filter(function(el) { return el && (el.Position.toLowerCase() == "right" || (isDesktopResolution && !isStoryFullLayout && el.Position.toLowerCase() == "preferright")) && (el.Group || "").split(',').filter(function(subel) { return subel && subel != undefined; }).map(function(subel) { return subel.toLowerCase(); }).some(function(subel) { return allAddRHCGroups.indexOf(subel) != -1 || allAddRHCGroups.indexOf('[all]') != -1; }) && !(el.Group || "").split(',').filter(function(subel) { return subel && subel != undefined; }).map(function(subel) { return subel.toLowerCase(); }).some(function(subel) { return allRemoveRHCGroups.indexOf(subel) != -1 || allRemoveRHCGroups.indexOf('[all]') != -1; }); }) : []; storyInlineContent.forEach( (c, ix) => c.inlineIndex = ix ); storyRHCContent.forEach( (c, ix) => c.rhcIndex = ix ); var googletag = w.googletag || {}; googletag.cmd = googletag.cmd || []; if( isNumberPositive(maxInlineSlots) ){ //PWVD-781 for(var tmpCounter = 0, i = 0, eL = storyCustomContentPlaceholders.length, adThresholdCounter = 1; i < eL; i++) { var currentIsPara = matches(storyCustomContentPlaceholders[i], 'p:not([class])'); var nextIsPara = (i + 1 < eL) && matches(storyCustomContentPlaceholders[i + 1], 'p:not([class])'); if( currentIsPara && !nextIsPara ){ //PWVD-897 - count paragraphs followed by any other element if(adThresholdCounter < (tmpCounter == 0 ? paragraphFirstThreshold : paragraphThreshold)) { adThresholdCounter++; continue; } } else if( currentIsPara && nextIsPara ) { if(adThresholdCounter < (tmpCounter == 0 ? paragraphFirstThreshold : paragraphThreshold)) { adThresholdCounter++; continue; } tmpCounter++; adThresholdCounter = 1; storyCustomContentPlaceholders[i].outerHTML = storyCustomContentPlaceholders[i].outerHTML + "<div class=\"story-inlinecontent-placeholder story-inlinecontent-placeholder-init item-notin-viewport\" data-storyinlinecontainer=\"" + tmpCounter + "\"><div class=\"story-inlinecontent-placeholder-inner\" data-id=\"story-inline-item-" + tmpCounter + "\" data-storyinlineitem=\"" + tmpCounter + "\"></div></div>"; if(tmpCounter >= maxInlineSlots && maxInlineSlots) break; } } } if(d.querySelector('#story.enhanced-advertising:not(.story-full-layout) #rightcolumn_sleeve')) { if(!(d.body.id == "story" || d.body.id == "story_custom") && !d.querySelector('.storytext div.table-full:not(.initialized)')) { w.addEventListener("abacus:storytexttablefull:finished", function(e) { adjustRHCHeightAndInitialAds(); }, true); } else { adjustRHCHeightAndInitialAds(); } } if('IntersectionObserver' in w && 'IntersectionObserverEntry' in w && 'intersectionRatio' in w.IntersectionObserverEntry.prototype) { d.querySelectorAll('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init').forEach(function(el) { if(el) { var inlineAdsObserver = new IntersectionObserver(function(entries) { return inlineAdsObserverCallback(entries); }, { root: null, rootMargin: "50px 0px 50px 0px", threshold: [0, 0.01, 0.99, 1] }); inlineAdsObserver.observe(el); } }); var inlineAdsObserverCallback = function(entries) { return entries.forEach(function(entry, i) { if(entry.isIntersecting) { entry.target.classList.remove('item-notin-viewport'); entry.target.classList.add('item-in-viewport'); } else { entry.target.classList.remove('item-in-viewport'); entry.target.classList.add('item-notin-viewport'); } }); }; d.querySelectorAll('.storytext-end, #rhcreflow-extra-end').forEach(function(el) { if(el) { var adsInViewportObserver = new IntersectionObserver(function(entries) { return adsInViewportObserverCallback(entries); }, { root: null, rootMargin: "0px 0px 200px 0px", threshold: [1] }); adsInViewportObserver.observe(el); } }); var adsInViewportObserverCallback = function(entries) { return entries.forEach(function(entry, i) { if(entry.isIntersecting) { if(entry.target.classList.contains('storytext-end') && d.body.classList.contains('enhanced-advertising-inline-init')) { d.body.classList.add('enhanced-advertising-storytext-endreached'); } // RHC is empty at load time so it always fires as in viewport, need to check whether rhc ads slots already init if(entry.target.classList.contains('rhcreflow-extra-end') && d.body.classList.contains('enhanced-advertising-rhc-init')) { d.body.classList.add('enhanced-advertising-rhc-endreached'); } /* if(entry.target.id === 'rhcreflow-extra'){ //Fix for issue when RHC is not in initial viewport if( location.host.indexOf('abasoftaws.co.uk') > 0 ) console.log('New observer callback'); readjusRHCHeight(); } */ } }); }; } var inlineEl = d.querySelector('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init:not(.story-inlinecontent-placeholder-completed):not(.story-inlinecontent-placeholder-processing)'); if(inlineEl) { googletag.cmd = googletag.cmd || []; googletag.cmd.push(function() { d.body.classList.add('enhanced-advertising-inline-init'); insertInlineSlot(inlineEl); console.log('Init inline ad slot load'); }); } function slotRender(event){ var el, slot = event.slot, slotId = slot.getSlotElementId(); if(enhAdDebug) console.log('Slot render: ' + slotId); if(slotId == 'custom-inline'){ el = document.querySelector(`div.story-inlinecontent-placeholder-inner[data-id="story-inline-item-${event.dataId}"]`); //Get inline slot (does not have ID) //if(!el) // el = document.querySelector(`div.story-inlinecontent-placeholder-inner[data-id="story-inline-item-${event.inlineIndex+1}"]`); } else el = d.getElementById(slotId); if(el) { var minHeight = 0; var parentInlineNode = getClosestParent(el, '.story-inlinecontent-placeholder'); var parentRHCNode = getClosestParent(el, '.story-rhccontent-placeholder'); if(parentInlineNode || parentRHCNode) { var classList = el.classList; if(parentInlineNode) { parentInlineNode.classList.add('story-inlinecontent-placeholder-ad'); var index = parseInt(parentInlineNode.hasAttribute('data-index') ? parentInlineNode.getAttribute('data-index') : '0', 10); if(!event.isEmpty) { classList.add('ad'); classList.add('mob-ad-50'); classList.add('ad-story-inline'); classList.add('ad-story-inline-notempty'); parentInlineNode.classList.add('story-inlinecontent-placeholder-ad-size-' + event.size.join('x')); parentInlineNode.setAttribute('data-slot', slot.getAdUnitPath()); var currentInlineSlot = storyInlineContent.filter(function(e) { return e.Index == index; }); if(currentInlineSlot.length) { minHeight = currentInlineSlot[0].MinHeight; if(currentInlineSlot[0].Repeat == false) { currentInlineSlot[0].Used = true; } } else { console.log('Slot with index [data-index="' + index + '"] was not found'); } parentInlineNode.classList.add('story-inlinecontent-placeholder-finished'); insertInlineSlot(d.querySelector('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init:not(.story-inlinecontent-processing)')); } else { classList.add('ad-story-inline-isempty'); var currentInlineSlot = storyInlineContent.filter(function(e) { return e.Index == index; }); if(currentInlineSlot.length) { minHeight = currentInlineSlot[0].MinHeight; currentInlineSlot[0].Used = true; } else { console.log('Slot with index [data-index="' + index + '"] was not found'); } if(parentInlineNode && parentInlineNode.hasAttribute('data-nobackfill')) { if(parentInlineNode.getAttribute('data-nobackfill') == '1') { updateInlinePlaceholderClasses(parentInlineNode, event.isEmpty, minHeight); if(!storyInlineContent.some(function(el) { return el.Used == false; })) { finalizeRemainingEmptyInlineSlotContainers(parentInlineNode.classList, true); } else { insertInlineSlot(d.querySelector('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init:not(.story-inlinecontent-processing)')); } initRHCHeightCalc(); return; } } // Move to next from the list if( storyInlineContent.some( function(e){ return e.Used == false; } ) ) { if(enhAdDebug) console.log('slotRender: parentInlineNode: Move to next from the list') var adRetryCssClass = 'ad-story-inline-retry'; var nextInlineSlotList = storyInlineContent.filter(function(e) { return e.Index > index && e.Used == false; }); if(!nextInlineSlotList.length) { // select repeatable ads nextInlineSlotList = storyInlineContent.filter(function(e) { return e.Used == false && e.Index > index && e.Repeat == true; }); if(!nextInlineSlotList.length) { // if no repeatable ads by indexed order then start from the beginning or just pick any existing nextInlineSlotList = storyInlineContent.filter(function(e) { return e.Used == false && e.Repeat == true; }); if(!nextInlineSlotList.length) { // no more ads to add d.body.classList.add('enhanced-advertising-inline-runoutofslots'); finalizeRemainingEmptyInlineSlotContainers(parentInlineNode.classList, true); updateInlinePlaceholderClasses(parentInlineNode, event.isEmpty, minHeight); initRHCHeightCalc(); return; } } } var mapInlineAdItem = nextInlineSlotList[0]; var refresh = EnhancedAdvertisingConfig.Refresh; googletag.destroySlots([slot]); if(mapInlineAdItem.Refresh) { refresh = mapInlineAdItem.Refresh; } if(mapInlineAdItem.Repeat) { parentInlineNode.classList.remove('story-inlinecontent-placeholder-repeat-false'); parentInlineNode.classList.add('story-inlinecontent-placeholder-repeat-true'); } else { parentInlineNode.classList.remove('story-inlinecontent-placeholder-repeat-true'); parentInlineNode.classList.add('story-inlinecontent-placeholder-repeat-false'); } var mapInlineAdItemSlot = googletag.defineSlot(mapInlineAdItem.AdUnit, isDesktopResolution ? mapInlineAdItem.AdUnitSizesInlineDesktop : mapInlineAdItem.AdUnitSizesInlineMobile, slotId); if(mapInlineAdItemSlot) { mapInlineAdItemSlot.defineSizeMapping(googletag.sizeMapping().build()).setTargeting('refresh', (refresh ? 'true' : 'false')).setTargeting('refreshdelayseconds', mapInlineAdItem.RefreshDelaySeconds || (isDesktopResolution ? EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultDesktop : EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultMobile)).setCollapseEmptyDiv(EnhancedAdvertisingConfig.CollapseEmptyDivs, false).addService(googletag.pubads()); } else { console.warn('Something wrong with inline ad slot \'' + slotId + '\', size(s) \'' + (isDesktopResolution ? mapInlineAdItem.AdUnitSizesInlineDesktop : mapInlineAdItem.AdUnitSizesInlineMobile).join('x') + '\', path \'' + mapInlineAdItem.AdUnit + '\''); } googletag.display(slotId); el.classList.add(adRetryCssClass); parentInlineNode.setAttribute('data-index', mapInlineAdItem.Index); if(mapInlineAdItem.ExtraHTML) { var extraHTMLEl = parentInlineNode.querySelector('.story-inlinecontent-placeholder-ad-extrahtml'); if(extraHTMLEl) { extraHTMLEl.innerHTML = mapInlineAdItem.ExtraHTML; } } else { var extraHTMLEl = parentInlineNode.querySelector('.story-inlinecontent-placeholder-ad-extrahtml'); if(extraHTMLEl) { extraHTMLEl.innerHTML = ''; } } } else { // no slots to add.. finalizeRemainingEmptyInlineSlotContainers(parentInlineNode.classList, true); } } } else if(parentRHCNode) { parentRHCNode.classList.add('story-rhccontent-placeholder-ad'); var index = parseInt(parentRHCNode.hasAttribute('data-index') ? parentRHCNode.getAttribute('data-index') : '0', 10); if(!event.isEmpty) { classList.add('ad-rhc'); classList.add('ad-story-rhc'); classList.add('ad-story-rhc-notempty'); parentRHCNode.classList.add('story-rhccontent-placeholder-ad-size-' + event.size.join('x')); parentRHCNode.setAttribute('data-slot', slot.getAdUnitPath()); var currentRHCSlot = storyRHCContent.filter(function(e) { return e.Index == index; }); if(currentRHCSlot.length) { minHeight = currentRHCSlot[0].MinHeight; if(currentRHCSlot[0].Repeat == false) { currentRHCSlot[0].Used = true; } if(currentRHCSlot[0].InsertIfNoRHCSpace) { currentRHCSlot[0].InsertIfNoRHCSpace = false; } } else { console.log('Slot with index [data-index="' + index + '"] was not found'); } parentRHCNode.classList.remove('story-rhccontent-placeholder-isempty'); parentRHCNode.classList.remove('story-rhccontent-placeholder-notempty'); parentRHCNode.classList.add((event.isEmpty ? 'story-rhccontent-placeholder-isempty' : 'story-rhccontent-placeholder-notempty')); parentRHCNode.classList.add('story-rhccontent-placeholder-ad-completed'); parentRHCNode.classList.add('story-rhccontent-placeholder-finished'); var canAddRHC = isStoryTextTallerThanRHC(); if( ( index > 0 && !d.body.classList.contains('enhanced-advertising-inline-completed') && parentRHCNode.classList.contains('story-rhccontent-placeholder-canbesticky') ) || ( canAddRHC.canAdd && parentRHCNode.classList.contains('story-rhccontent-placeholder-canbesticky') && canAddRHC.delta > EnhancedAdvertisingConfig.RHCMinHeightForStickyAd ) ){ parentRHCNode.classList.remove('story-rhccontent-placeholder-canbesticky'); parentRHCNode.classList.add('story-rhccontent-placeholder-sticky'); } } else { classList.add('ad-story-rhc-isempty'); var currentRHCSlot = storyRHCContent.filter(function(e) { return e.Index == index; }); if(currentRHCSlot.length) { currentRHCSlot[0].Used = true; } else { console.log('Slot with index [data-index="' + index + '"] was not found'); } if(parentRHCNode && parentRHCNode.hasAttribute('data-nobackfill')) { if(parentRHCNode.getAttribute('data-nobackfill') == '1') { updateRHCPlaceholderClasses(parentRHCNode, event.isEmpty); if(!storyRHCContent.some(function(el) { return el.Used == false; })) { d.body.classList.add('enhanced-advertising-rhc-runoutofslots'); finalizeRemainingEmptyRHCSlotContainers(parentRHCNode.classList, true); } initRHCHeightCalc(); return; } } // Move to next from the list if(enhAdDebug){ console.log('slotRender: parentRHCNode: storyRHCContent: index: ' + index); console.log(storyRHCContent); } if(storyRHCContent.some(function(e) { return e.Used == false; })) { var adRetryCssClass = 'ad-story-rhc-retry'; var nextRHCSlotList = storyRHCContent.filter(function(e) { if(enhAdDebug) console.log('%c Current index: ' + e.Index + ', slot data index: ' + index, 'color: #0C6') return e.Index > index && e.Used == false; }); if(enhAdDebug){ console.log('%c slotRender: parentRHCNode: Moved to next from the list', 'color: #06C'); console.log(nextRHCSlotList); } if(!nextRHCSlotList.length) { // select repeatable ads nextRHCSlotList = storyRHCContent.filter(function(e) { return e.Used == false && e.Index > index && e.Repeat == true; }); if(!nextRHCSlotList.length) { // if no repeatable ads by indexed order then start from the beginning or just pick any existing nextRHCSlotList = storyRHCContent.filter(function(e) { return e.Used == false && e.Repeat == true; }); if(!nextRHCSlotList.length) { // no more ads to add finalizeRemainingEmptyRHCSlotContainers(parentRHCNode.classList, false); //updateRHCPlaceholderClasses(parentRHCNode, event.isEmpty, minHeight); updateRHCPlaceholderClasses(parentRHCNode, event.isEmpty); initRHCHeightCalc(); return; } } } var mapRHCAdItem = nextRHCSlotList[0]; var refresh = EnhancedAdvertisingConfig.Refresh; googletag.destroySlots([slot]); if(mapRHCAdItem.Refresh) { refresh = mapRHCAdItem.Refresh; } if(mapRHCAdItem.Repeat) { parentRHCNode.classList.remove('story-rhccontent-placeholder-repeat-false'); parentRHCNode.classList.add('story-rhccontent-placeholder-repeat-true'); } else { parentRHCNode.classList.remove('story-rhccontent-placeholder-repeat-true'); parentRHCNode.classList.add('story-rhccontent-placeholder-repeat-false'); } if(mapRHCAdItem.Type == 'customcontent'){ //Custom content (RSCCS-540) if(enhAdDebug) console.log('Next RHC config item is custom content'); adjustRHCHeightAndInitialAds(); } else if(mapRHCAdItem.AdUnit){ //Google ad var mapInlineAdItemSlot = googletag.defineSlot(mapRHCAdItem.AdUnit, isDesktopResolution ? mapRHCAdItem.AdUnitSizesInlineDesktop : mapRHCAdItem.AdUnitSizesInlineMobile, slotId); if(mapInlineAdItemSlot) { mapInlineAdItemSlot.defineSizeMapping( googletag.sizeMapping().build() ).setTargeting( 'refresh', (refresh ? 'true' : 'false') ).setTargeting( 'refreshdelayseconds', mapRHCAdItem.RefreshDelaySeconds || (isDesktopResolution ? EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultDesktop : EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultMobile) ).setCollapseEmptyDiv( EnhancedAdvertisingConfig.CollapseEmptyDivs, false ).addService( googletag.pubads() ); } else { console.warn('SlotRender: Something wrong with RHC ad slot \'' + slotId + '\', size(s) \'' + (isDesktopResolution ? mapRHCAdItem.AdUnitSizesInlineDesktop : mapRHCAdItem.AdUnitSizesInlineMobile).join('x') + '\', path \'' + mapRHCAdItem.AdUnit + '\''); } googletag.display(slotId); } el.classList.add(adRetryCssClass); parentRHCNode.setAttribute('data-index', mapRHCAdItem.Index); if(mapRHCAdItem.ExtraHTML) { var extraHTMLEl = parentRHCNode.querySelector('.story-rhccontent-placeholder-ad-extrahtml'); if(extraHTMLEl) { extraHTMLEl.innerHTML = mapRHCAdItem.ExtraHTML; } } else { var extraHTMLEl = parentRHCNode.querySelector('.story-rhccontent-placeholder-ad-extrahtml'); if(extraHTMLEl) { extraHTMLEl.innerHTML = ''; } } } else { // no slots to add.. finalizeRemainingEmptyRHCSlotContainers(parentRHCNode.classList, false); } } } if(parentInlineNode) { updateInlinePlaceholderClasses(parentInlineNode, event.isEmpty, minHeight); } else { //updateRHCPlaceholderClasses(parentRHCNode, event.isEmpty, minHeight); updateRHCPlaceholderClasses(parentRHCNode, event.isEmpty); } } } initRHCHeightCalc(); } googletag.cmd = googletag.cmd || []; googletag.cmd.push(function() { googletag.pubads().addEventListener('slotRequested', function(event) { var slot = event.slot; var el = d.getElementById(slot.getSlotElementId()); if(el) { var parentInlineNode = getClosestParent(el, '.story-inlinecontent-placeholder'); var parentRHCNode = getClosestParent(el, '.story-rhccontent-placeholder'); if(parentInlineNode || parentRHCNode) { if(parentInlineNode) { parentInlineNode.classList.add('story-inlinecontent-placeholder-ad-init'); } else { parentRHCNode.classList.add('story-rhccontent-placeholder-ad-init'); } } } }); googletag.pubads().addEventListener('slotRenderEnded', function(event) { var sId = event.slot.getSlotElementId(); if( enhAdDebug && sId.includes('story-rhcad') || sId.includes('story-inlinead') ){ console.log(`%c Slot RENDER END (${sId})`, 'color: #FE2ACA'); console.log(event); //loadOrRender(sId, 'render', event); } slotRender(event); }); if(enhAdDebug){ //Track slot load events googletag.pubads().addEventListener('slotOnload', (evLoad) => { var sId = evLoad.slot.getSlotElementId(); if( sId.includes('story-rhcad') || sId.includes('story-inlinead') ){ console.log(`%c Slot LOAD (${ evLoad.slot.getSlotElementId() })`, 'color: #C00;'); console.log(event); //loadOrRender(sId, 'load'); } }); } googletag.pubads().addEventListener('slotVisibilityChanged', function(event) { var slot = event.slot; if(slot.getTargeting('refresh').indexOf('true') > -1 && event.inViewPercentage > 0) { var el = d.getElementById(slot.getSlotElementId()); var parentStoryInlineNode = getClosestParent(el, '.ad-story-inline'); var parentStoryRHCNode = getClosestParent(el, '.ad-story-rhc'); if(parentStoryInlineNode || parentStoryRHCNode) { if(parentStoryInlineNode) { var inlineEl = getClosestParent(el, '.story-inlinecontent-placeholder'); if(inlineEl) { if(inlineEl.hasAttribute('data-shouldrefresh')) { var shouldRefresh = inlineEl.getAttribute('data-shouldrefresh'); if(shouldRefresh && shouldRefresh == '1') { googletag.cmd.push(function() { googletag.pubads().refresh([slot], { changeCorrelator: false }); }); var classList = parentStoryInlineNode.classList; var cssClassName = 'ad-story-inline-refreshed-'; var cssClassCounter = 1; for(var i = 0, c = parentStoryInlineNode.className.split(' '), iL = c.length; i < iL; i++) { var v = c[i]; if(v.indexOf(cssClassName) != -1) { cssClassCounter = parseInt(v.split(cssClassName).join(''), 10) + 1; classList.remove(v); break; } } classList.add(cssClassName + cssClassCounter); classList.add('ad-story-inline-refreshed'); inlineEl.setAttribute('data-shouldrefresh', '0'); } } } } else { var rhcEl = getClosestParent(el, '.story-rhccontent-placeholder'); if(rhcEl) { if(rhcEl.hasAttribute('data-shouldrefresh')) { var shouldRefresh = rhcEl.getAttribute('data-shouldrefresh'); if(shouldRefresh && shouldRefresh == '1') { googletag.cmd.push(function() { googletag.pubads().refresh([slot], { changeCorrelator: false }); }); var classList = parentStoryRHCNode.classList; var cssClassName = 'ad-story-rhc-refreshed-'; var cssClassCounter = 1; for(var i = 0, c = parentStoryRHCNode.className.split(' '), iL = c.length; i < iL; i++) { var v = c[i]; if(v.indexOf(cssClassName) != -1) { cssClassCounter = parseInt(v.split(cssClassName).join(''), 10) + 1; classList.remove(v); break; } } classList.add(cssClassName + cssClassCounter); classList.add('ad-story-rhc-refreshed'); rhcEl.setAttribute('data-shouldrefresh', '0'); } } } } } } }); googletag.pubads().addEventListener('impressionViewable', function(event) { var slot = event.slot; if(slot.getTargeting('refresh').indexOf('true') > -1) { var refreshdelayseconds = slot.getTargeting('refreshdelayseconds').length ? parseInt(slot.getTargeting('refreshdelayseconds')[0], 10) : 0; if(refreshdelayseconds) { setTimeout(function() { var el = d.getElementById(slot.getSlotElementId()); var parentStoryInlineNode = getClosestParent(el, '.ad-story-inline'); var parentStoryRHCNode = getClosestParent(el, '.ad-story-rhc'); if(parentStoryInlineNode) { var inlineEl = getClosestParent(el, '.story-inlinecontent-placeholder'); if(inlineEl) { if(inlineEl.classList.contains('item-in-viewport')) { googletag.cmd.push(function() { googletag.pubads().refresh([slot], { changeCorrelator: false }); }); var classList = parentStoryInlineNode.classList; var cssClassName = 'ad-story-inline-refreshed-'; var cssClassCounter = 1; for(var i = 0, c = parentStoryInlineNode.className.split(' '), iL = c.length; i < iL; i++) { var v = c[i]; if(v.indexOf(cssClassName) != -1) { cssClassCounter = parseInt(v.split(cssClassName).join(''), 10) + 1; classList.remove(v); break; } } classList.add(cssClassName + cssClassCounter); inlineEl.setAttribute('data-shouldrefresh', '0'); } else { inlineEl.setAttribute('data-shouldrefresh', '1'); } } } else if(parentStoryRHCNode) { var rhcEl = getClosestParent(el, '.story-rhccontent-placeholder'); if(rhcEl) { if(rhcEl.classList.contains('item-in-viewport')) { googletag.cmd.push(function() { googletag.pubads().refresh([slot], { changeCorrelator: false }); }); var classList = parentStoryRHCNode.classList; var cssClassName = 'ad-story-rhc-refreshed-'; var cssClassCounter = 1; for(var i = 0, c = parentStoryRHCNode.className.split(' '), iL = c.length; i < iL; i++) { var v = c[i]; if(v.indexOf(cssClassName) != -1) { cssClassCounter = parseInt(v.split(cssClassName).join(''), 10) + 1; classList.remove(v); break; } } classList.add(cssClassName + cssClassCounter); rhcEl.setAttribute('data-shouldrefresh', '0'); } else { rhcEl.setAttribute('data-shouldrefresh', '1'); } } } }, refreshdelayseconds * 1000); } else { console.log('Ad refresh delay in seconds is incorrect (slot: ' + slot.getSlotElementId() + '): ', refreshdelayseconds); } } }); }); function isBoolean(n) { return !!n === n; } function isNumber(n) { return +n === n; } function isString(n) { return '' + n === n; } function isNumberPositive(n) { return +n === n && n > 0; } function isNumberPositiveOrZero(n) { return +n === n && n >= 0; } function isArrayOfArrays(a) { return a.every(function(x) { return Array.isArray(x); }); } function getAbsoluteHeight(element) { if(!element) return 0; var styles = w.getComputedStyle(element); var margin = parseFloat(styles['margin-top']) + parseFloat(styles['margin-bottom']); var minHeight = element.clientHeight; return Math.ceil(minHeight ? minHeight + margin : element.offsetHeight + margin); } function updateRHCContainerState() { var classList = d.body.classList; if(!d.querySelectorAll('#rhcreflow-extra .story-rhccontent-placeholder.story-rhccontent-placeholder-completed').length) { d.body.classList.add('enhanced-advertising-rhc-empty'); } else { d.body.classList.remove('enhanced-advertising-rhc-empty'); } } function insertRHCSlot(el) { if(el) { el.classList.add('story-rhccontent-placeholder-processing'); } if(el && storyRHCContent.some(function(e) { return e.Used == false; })) { var classList = el.classList; var placeholder = el.querySelector('[data-id]'); var tempFilteredRHCAds = storyRHCContent; if(placeholder) { var elemsIndexes = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed[data-index]'); var slotIndex = elemsIndexes.length ? parseInt(elemsIndexes[elemsIndexes.length - 1].getAttribute('data-index'), 10) : -1; tempFilteredRHCAds = storyRHCContent.filter(function(e) { return slotIndex < e.Index && e.Used == false; }); if(!tempFilteredRHCAds.length) { tempFilteredRHCAds = storyRHCContent.filter(function(e) { return e.Used == false && slotIndex < e.Index && e.Repeat == true; }); } if(!tempFilteredRHCAds.length) { tempFilteredRHCAds = storyRHCContent.filter(function(e) { return e.Used == false && e.Repeat == true; }); } if(!tempFilteredRHCAds.length) { finalizeRemainingEmptyRHCSlotContainers(classList, false); return; } var mapRHCAdItem = tempFilteredRHCAds[0]; classList.remove('story-rhccontent-placeholder-init'); classList.remove('story-rhccontent-placeholder-processing'); classList.add('story-rhccontent-placeholder-completed'); if(mapRHCAdItem.CSSClass) { mapRHCAdItem.CSSClass.split(' ').forEach(function(elem) { if(elem) { classList.add(elem); } }); } if(mapRHCAdItem.Type == 'gamadvert') { if(placeholder) { var refresh = EnhancedAdvertisingConfig.Refresh; el.setAttribute('data-storycustomcontent', '0'); if(mapRHCAdItem.Sticky) { classList.add('story-rhccontent-placeholder-canbesticky'); placeholder.classList.add('sticky'); } if(mapRHCAdItem.NoBackfill) { el.setAttribute('data-nobackfill', '1'); } else { el.setAttribute('data-nobackfill', '0'); } if(mapRHCAdItem.Refresh) { refresh = mapRHCAdItem.Refresh; } var mapRHCAdItemSlot = googletag.defineSlot(mapRHCAdItem.AdUnit, mapRHCAdItem.AdUnitSizesRHC, 'story-rhcad-' + rhcAdCounter); if(mapRHCAdItemSlot) { mapRHCAdItemSlot.defineSizeMapping(googletag.sizeMapping().build()).setTargeting('refresh', (refresh ? 'true' : 'false')).setTargeting('refreshdelayseconds', mapRHCAdItem.RefreshDelaySeconds || (isDesktopResolution ? EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultDesktop : EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultMobile)).setCollapseEmptyDiv(EnhancedAdvertisingConfig.CollapseEmptyDivs, false).addService(googletag.pubads()); } else { console.warn('Something wrong with rhc ad slot \'' + 'story-rhcad-' + rhcAdCounter + '\', size(s) \'' + mapRHCAdItem.AdUnitSizesRHC.join('x') + '\', path \'' + mapRHCAdItem.AdUnit + '\''); } if(refresh) { el.setAttribute('data-shouldrefresh', '0'); classList.add('story-rhccontent-placeholder-refresh-true'); } else { classList.add('story-rhccontent-placeholder-refresh-false'); } classList.add('story-rhccontent-placeholder-ad'); placeholder.id = 'story-rhcad-' + rhcAdCounter; placeholder.outerHTML = '<div class="story-rhccontent-placeholder-ad-extrahtml">' + mapRHCAdItem.ExtraHTML + '</div>' + placeholder.outerHTML; el.setAttribute('data-slot', mapRHCAdItem.AdUnit); googletag.display('story-rhcad-' + rhcAdCounter); $(w).trigger("wvcfe:storyrhcaditeminit", [$(el), $(placeholder), mapRHCAdItem, rhcAdCounter, rhcCounter, false, 'rhc', mapRHCAdItem.Type]); if(mapRHCAdItem.CustomEventName) { $(w).trigger(mapRHCAdItem.CustomEventName, [el, placeholder, mapRHCAdItem, rhcAdCounter, rhcCounter, false, 'rhc', mapRHCAdItem.Type]); } if(mapRHCAdItem.Javascript) { if(typeof mapRHCAdItem.Javascript === 'function') { mapRHCAdItem.Javascript.call(this, el, placeholder, mapRHCAdItem, rhcAdCounter, rhcCounter, false, 'rhc', mapRHCAdItem.Type); } } rhcAdCounter++; } } else if(mapRHCAdItem.Type == 'customcontent') { el.setAttribute('data-storycustomcontent', '1'); classList.add('story-rhccontent-placeholder-customcontent'); if(placeholder) { placeholder.innerHTML = mapRHCAdItem.HTML; classList.add('story-rhccontent-placeholder-notempty'); $(w).trigger("wvcfe:storyrhcitemajaxinit", [$(el), $(placeholder), mapRHCAdItem, rhcCounter, false, 'rhc', mapRHCAdItem.Type]); if(mapRHCAdItem.CustomEventName) { $(w).trigger(mapRHCAdItem.CustomEventName, [$(el), $(placeholder), mapRHCAdItem, rhcCounter, false, 'rhc', mapRHCAdItem.Type]); } if(mapRHCAdItem.Javascript) { if(typeof mapRHCAdItem.Javascript === 'function') { mapRHCAdItem.Javascript.call(this, el, placeholder, mapRHCAdItem, rhcCounter, false, 'rhc', mapRHCAdItem.Type); } } el.classList.add('story-rhccontent-placeholder-finished'); } } el.setAttribute('data-index', mapRHCAdItem.Index); rhcCounter++; } else { console.log('Missing placeholder: [data-id="story-rhc-item-' + rhcCounter + '"]'); } } else if(el) { // All slots are used, mark current slot placeholder and the rest ones as completed and used var classList = el.classList; finalizeRemainingEmptyRHCSlotContainers(classList, false); } else { console.log('Missing RHC element'); } } function insertInlineSlot(el) { if(el) { el.classList.add('story-inlinecontent-placeholder-processing'); } if(el && storyInlineContent.some(function(e) { return e.Used == false; })) { var classList = el.classList; var placeholder = el.querySelector('[data-id]'); var tempFilteredInlineAds = storyInlineContent; if(placeholder) { var elemsIndexes = d.querySelectorAll('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-completed[data-index]'); var slotIndex = elemsIndexes.length ? parseInt(elemsIndexes[elemsIndexes.length - 1].getAttribute('data-index'), 10) : -1; tempFilteredInlineAds = storyInlineContent.filter(function(e){ return slotIndex < e.Index && e.Used == false; }); if(!tempFilteredInlineAds.length) { tempFilteredInlineAds = storyInlineContent.filter(function(e) { return e.Used == false && slotIndex < e.Index && e.Repeat == true; }); if(!tempFilteredInlineAds.length) { // start from the first repeatable ad index tempFilteredInlineAds = storyInlineContent.filter(function(e) { return e.Used == false && e.Repeat == true; }); if(!tempFilteredInlineAds.length) { finalizeRemainingEmptyInlineSlotContainers(classList, true); return; } } } var mapInlineAdItem = tempFilteredInlineAds[0]; classList.remove('story-inlinecontent-placeholder-init'); classList.remove('story-inlinecontent-placeholder-processing'); classList.add('story-inlinecontent-placeholder-completed'); if(mapInlineAdItem.CSSClass) { mapInlineAdItem.CSSClass.split(' ').forEach(function(elem) { if(elem) { classList.add(elem); } }); } if(mapInlineAdItem.Type == 'gamadvert') { var refresh = EnhancedAdvertisingConfig.Refresh; el.setAttribute('data-storycustomcontent', '0'); el.classList.add('story-inlinecontent-placeholder-ad'); if(mapInlineAdItem.Sticky) { classList.add('story-inlinecontent-placeholder-sticky'); placeholder.classList.add('sticky'); } if(mapInlineAdItem.NoBackfill) { el.setAttribute('data-nobackfill', '1'); } else { el.setAttribute('data-nobackfill', '0'); } if(mapInlineAdItem.Repeat) { classList.add('story-inlinecontent-placeholder-repeat-true'); } else { classList.add('story-inlinecontent-placeholder-repeat-false'); } if(mapInlineAdItem.Refresh) { refresh = mapInlineAdItem.Refresh; } var mapInlineAdItemSlot = googletag.defineSlot(mapInlineAdItem.AdUnit, isDesktopResolution ? mapInlineAdItem.AdUnitSizesInlineDesktop : mapInlineAdItem.AdUnitSizesInlineMobile, 'story-inlinead-' + inlineAdCounter); if(mapInlineAdItemSlot) { mapInlineAdItemSlot.defineSizeMapping(googletag.sizeMapping().build()).setTargeting('refresh', (refresh ? 'true' : 'false')).setTargeting('refreshdelayseconds', mapInlineAdItem.RefreshDelaySeconds || (isDesktopResolution ? EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultDesktop : EnhancedAdvertisingConfig.RefreshDelaySecondsDefaultMobile)).setCollapseEmptyDiv(EnhancedAdvertisingConfig.CollapseEmptyDivs, false).addService(googletag.pubads()); } else { console.warn('Something wrong with inline ad slot \'' + 'story-inlinead-' + inlineAdCounter + '\', size(s) \'' + (isDesktopResolution ? mapInlineAdItem.AdUnitSizesInlineDesktop : mapInlineAdItem.AdUnitSizesInlineMobile).join('x') + '\', path \'' + mapInlineAdItem.AdUnit + '\''); } if(refresh) { el.setAttribute('data-shouldrefresh', '0'); classList.add('story-inlinecontent-placeholder-refresh-true'); } else { classList.add('story-inlinecontent-placeholder-refresh-false'); } placeholder.id = 'story-inlinead-' + inlineAdCounter; placeholder.outerHTML = '<div class="story-inlinecontent-placeholder-ad-extrahtml">' + mapInlineAdItem.ExtraHTML + '</div>' + placeholder.outerHTML; el.setAttribute('data-slot', mapInlineAdItem.AdUnit); googletag.display('story-inlinead-' + inlineAdCounter); $(w).trigger("wvcfe:storyinlineaditeminit", [$(el), $(placeholder), mapInlineAdItem, inlineAdCounter, inlineCounter, false, 'inline', mapInlineAdItem.Type]); if(mapInlineAdItem.CustomEventName) { $(w).trigger(mapInlineAdItem.CustomEventName, [el, placeholder, mapInlineAdItem, inlineAdCounter, inlineCounter, false, 'inline', mapInlineAdItem.Type]); } if(mapInlineAdItem.Javascript) { if(typeof mapInlineAdItem.Javascript === 'function') { mapInlineAdItem.Javascript.call(this, el, placeholder, mapInlineAdItem, inlineAdCounter, inlineCounter, false, 'inline', mapInlineAdItem.Type); } } inlineAdCounter++; } else if(mapInlineAdItem.Type == 'customcontent') { el.setAttribute('data-storycustomcontent', '1'); el.classList.add('story-inlinecontent-placeholder-customcontent'); placeholder.innerHTML = mapInlineAdItem.HTML; $(w).trigger("wvcfe:storyinlineitemajaxinit", [$(el), $(placeholder), mapInlineAdItem, inlineCounter, false, 'inline', mapInlineAdItem.Type]); if(mapInlineAdItem.CustomEventName) { $(w).trigger(mapInlineAdItem.CustomEventName, [$(el), $(placeholder), mapInlineAdItem, inlineCounter, false, 'inline', mapInlineAdItem.Type]); } if(mapInlineAdItem.Javascript) { if(typeof mapInlineAdItem.Javascript === 'function') { mapInlineAdItem.Javascript.call(this, el, placeholder, mapInlineAdItem, inlineCounter, false, 'inline', mapInlineAdItem.Type.toLowerCase()); } } el.classList.add('story-inlinecontent-placeholder-finished'); var inlineCustomEvent = { dataId: (mapInlineAdItem.Index+1), slot: { getSlotElementId: function(){ return 'custom-inline'; }, getAdUnitPath: function(){return 'custom-inline'} }, isEmpty: false, size:[0,0] }; el.setAttribute('data-index', mapInlineAdItem.Index); slotRender(inlineCustomEvent); //$(w).trigger('abacus:inlinecontentrender', inlineCustomEvent); } el.setAttribute('data-index', mapInlineAdItem.Index); //el.setAttribute('data-index', inlineCounter); inlineCounter++; } else { console.log('Missing placeholder: [data-id="story-inline-item-' + inlineCounter + '"]'); } } else if(el) { // All slots are used, mark current slot placeholder and the rest ones as completed and used var classList = el.classList; finalizeRemainingEmptyInlineSlotContainers(classList, true); } else { console.log('Missing inline element'); } } function finalizeRemainingEmptyRHCSlotContainers(classList, processremaining) { classList.remove('story-rhccontent-placeholder-init'); classList.remove('story-rhccontent-placeholder-processing'); classList.add('story-rhccontent-placeholder-completed'); classList.add('story-rhccontent-placeholder-isempty'); classList.add('story-rhccontent-placeholder-runoutofslots'); classList.add('story-rhccontent-placeholder-finished'); if(processremaining) { for(var i = 0, elems = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-init:not(.story-rhccontent-placeholder-processing)'), iL = elems.length; i < iL; i++) { var e = elems[i]; if(e) { var c = e.classList; c.remove('story-rhccontent-placeholder-init'); c.add('story-rhccontent-placeholder-completed'); c.add('story-rhccontent-placeholder-isempty'); c.add('story-rhccontent-placeholder-runoutofslots'); c.add('story-rhccontent-placeholder-finished'); } } } } function finalizeRemainingEmptyInlineSlotContainers(classList, processremaining) { classList.remove('story-inlinecontent-placeholder-init'); classList.remove('story-inlinecontent-placeholder-processing'); classList.add('story-inlinecontent-placeholder-completed'); classList.add('story-inlinecontent-placeholder-isempty'); classList.add('story-inlinecontent-placeholder-runoutofslots'); classList.add('story-inlinecontent-placeholder-finished'); if(processremaining) { for(var i = 0, elems = d.querySelectorAll('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init:not(.story-inlinecontent-placeholder-processing)'), iL = elems.length; i < iL; i++) { var e = elems[i]; if(e) { var c = e.classList; c.remove('story-inlinecontent-placeholder-init'); c.add('story-inlinecontent-placeholder-completed'); c.add('story-inlinecontent-placeholder-isempty'); c.add('story-inlinecontent-placeholder-runoutofslots'); c.add('story-inlinecontent-placeholder-finished'); } } } } function updateInlinePlaceholderClasses(node, status, minHeight) { node.classList.remove('story-inlinecontent-placeholder-isempty'); node.classList.remove('story-inlinecontent-placeholder-notempty'); node.classList.add((status ? 'story-inlinecontent-placeholder-isempty' : 'story-inlinecontent-placeholder-notempty')); node.classList.add('story-inlinecontent-placeholder-ad-completed'); if(!status) { var computedMinHeightValue = w.getComputedStyle(node).minHeight || 0; var computedMinHeight = parseInt(computedMinHeightValue, 10); if(minHeight > computedMinHeight) { node.style.minHeight = minHeight + 'px'; } } } function updateRHCPlaceholderClasses(node, status) { node.classList.remove('story-rhccontent-placeholder-ad-init'); node.classList.remove('story-rhccontent-placeholder-isempty'); node.classList.remove('story-rhccontent-placeholder-notempty'); node.classList.add((status ? 'story-rhccontent-placeholder-isempty' : 'story-rhccontent-placeholder-notempty')); node.classList.add('story-rhccontent-placeholder-ad-completed'); } function initRHCHeightCalc() { updateRHCFirstandLastItemStyles(); // readjust height if no in progress/loading ads as the height might change on storytext or RHC if(!d.querySelectorAll('#rhcreflow-extra .story-rhccontent-placeholder.story-rhccontent-placeholder-completed.story-rhccontent-placeholder-ad-init').length) { readjusRHCHeight(); } else { setTimeout(function() { initRHCHeightCalc(); }, 0); } } function isInViewport(element) { var rect = element.getBoundingClientRect(); var height = w.innerHeight || d.documentElement.clientHeight; var width = w.innerWidth || d.documentElement.clientWidth; return ( rect.right >= 0 && rect.bottom >= 0 && rect.left <= width && rect.top <= height ); } function processElementsInViewport() { var adsInlinePlaceholders = d.querySelectorAll('.storytext .story-inlinecontent-placeholder'); //PWVD-893 : change from rhccontent var adsRHCPlaceholders = d.querySelectorAll('#rhcreflow-extra .story-rhccontent-placeholder'); if(adsInlinePlaceholders || adsRHCPlaceholders) { if(adsInlinePlaceholders) { adsInlinePlaceholders.forEach(function(el) { var classList = el.classList; if(!isInViewport(el)) { classList.remove('story-inlinecontent-placeholder-isinviewport'); classList.add('story-inlinecontent-placeholder-isnotinviewport'); } else { classList.remove('story-inlinecontent-placeholder-isnotinviewport'); classList.add('story-inlinecontent-placeholder-isinviewport'); } }); } else { adsRHCPlaceholders.forEach(function(el) { var classList = el.classList; if(!isInViewport(el)) { classList.remove('story-rhccontent-placeholder-isinviewport'); classList.add('story-rhccontent-placeholder-isnotinviewport'); } else { classList.remove('story-rhccontent-placeholder-isnotinviewport'); classList.add('story-rhccontent-placeholder-isinviewport'); } }); } } } function adjustRHCHeightAndInitialAds() { var output = []; var googletag = w.googletag || {}; var rhcreflowExtra = d.querySelector('#rhcreflow-extra'); if(rhcreflowExtra) { rhcreflowExtra.innerHTML = ''; minRHCSlotsToFitIn = (minRHCSlots > 0 ? minRHCSlots : 2); maxRHCSlotsToFitIn = (maxRHCSlots > 0 ? maxRHCSlots : 0); for(var i = 0, iL = Math.max(storyRHCContent.length, maxRHCSlotsToFitIn); i < iL; i++) { rhcCounter = i + 1; output.push("<div class=\"story-rhccontent-placeholder story-rhccontent-placeholder-init item-notin-viewport\" data-storyrhccontainer=\"" + rhcCounter + "\"><div class=\"story-rhccontent-placeholder-inner\" data-id=\"story-rhc-item-" + rhcCounter + "\" data-storyrhcitem=\"" + rhcCounter + "\"></div></div>"); if(rhcCounter >= maxRHCSlotsToFitIn) break; } d.querySelector('#rhcreflow-extra').innerHTML = output.join(''); if('IntersectionObserver' in w && 'IntersectionObserverEntry' in w && 'intersectionRatio' in w.IntersectionObserverEntry.prototype) { d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-init').forEach(function(el) { if(el) { observer = new IntersectionObserver(function(entries) { return observerCallback(entries); }, { root: null, rootMargin: "50px 0px 50px 0px", threshold: [0, 0.01, 0.99, 1] }); observer.observe(el); } }); var observerCallback = function(entries) { return entries.forEach(function(entry, i) { if(entry.isIntersecting) { entry.target.classList.remove('item-notin-viewport'); entry.target.classList.add('item-in-viewport'); } else { entry.target.classList.remove('item-in-viewport'); entry.target.classList.add('item-notin-viewport'); } }); } } googletag.cmd = googletag.cmd || []; googletag.cmd.push(function() { var rhcEl = d.querySelector('.story-rhccontent-placeholder.story-rhccontent-placeholder-init:not(.story-rhccontent-placeholder-completed):not(.story-rhccontent-placeholder-processing)'); var hasAnyRHCLoadedBefore = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed'); if(rhcEl && !hasAnyRHCLoadedBefore.length) { insertRHCSlot(rhcEl); d.body.classList.add('enhanced-advertising-rhc-init'); } }); updateRHCContainerState(); } } function isStoryTextTallerThanRHC() { var calcHeight = 0; if(w.matchMedia("screen and (min-width: 1023px)").matches && !d.body.classList.contains('story-full-layout')) { var h = 0, colmain = d.getElementById('colmain').clientHeight; d.querySelectorAll('#rightcolumn_sleeve > *:not(#rhcreflow-extra)').forEach(function(item) { h = getAbsoluteHeight(item); item.setAttribute('data-height', h); calcHeight += h; }); d.querySelectorAll('#rhcreflow-extra > *').forEach(function(item) { h = getAbsoluteHeight(item); item.setAttribute('data-height', h); calcHeight += h; }); return { "canAdd": colmain > calcHeight, "delta": colmain - calcHeight }; } else { return { "canAdd": false, "delta": 0 }; } } function canAddRHCItem() { // check whether inline and RHC ads finished loading, otherwise ignore var storyRHCSlotHeight = EnhancedAdvertisingConfig.RHCMinHeightForSlotInsert; var calcHeight = 0; if(w.matchMedia("screen and (min-width: 1023px)").matches && !d.body.classList.contains('story-full-layout')) { var h = 0, innerChild = 0; d.querySelectorAll('#rightcolumn_sleeve > *:not(#rhcreflow-extra)').forEach(function(item) { h = getAbsoluteHeight(item); item.setAttribute('data-height', h); calcHeight += h; }); d.querySelectorAll('#rhcreflow-extra > *').forEach(function(item) { //innerChild = (item || item.querySelector('.story-rhccontent-placeholder-inner') || item.firstChild); //h = getAbsoluteHeight(innerChild); //if (h == 0) { // h = getAbsoluteHeight(item); //} h = getAbsoluteHeight(item); item.setAttribute('data-height', h); calcHeight += h; }); var result = { "canAddRHCItem": d.getElementById('colmain').clientHeight > calcHeight + storyRHCSlotHeight, "colmainTaller": d.getElementById('colmain').clientHeight > calcHeight }; return result; } else { return { "canAddRHCItem": false, "colmainTaller": false }; } } function readjusRHCHeight() { if(w.matchMedia("screen and (min-width: 1023px)").matches && !d.body.classList.contains('story-full-layout')) { d.getElementById('rightcolumn_sleeve').style.minHeight = d.getElementById('colmain').clientHeight + 'px'; } var elemsIndexes = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed[data-index]'); var slotIndex = elemsIndexes.length ? parseInt(elemsIndexes[elemsIndexes.length - 1].getAttribute('data-index'), 10) : -1; var rhcEl = d.querySelector('.story-rhccontent-placeholder.story-rhccontent-placeholder-init:not(.story-rhccontent-placeholder-completed):not(.story-rhccontent-placeholder-processing)'); var canAdd = canAddRHCItem(); var hasInsertIfNoRHCSpace = storyRHCContent.some(function(e) { return e.InsertIfNoRHCSpace == true && e.Used == false && e.Index > slotIndex; }); if(!rhcEl || (!canAdd.canAddRHCItem && !hasInsertIfNoRHCSpace && !d.querySelectorAll('.story-inlinecontent-placeholder.story-inlinecontent-placeholder-init:not(.story-inlinecontent-processing)').length)) { d.body.classList.add('enhanced-advertising-rhc-completed'); } else { d.body.classList.remove('enhanced-advertising-rhc-completed'); } //var rhcElementsInitialised = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed:not(.story-rhccontent-placeholder-init):not(.story-rhccontent-placeholder-processing):not(.story-rhccontent-placeholder-finished)'); var rhcElementsInitialised = d.querySelectorAll('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed:not(.story-rhccontent-placeholder-init):not(.story-rhccontent-placeholder-processing):not(.story-rhccontent-placeholder-finished):not(.story-rhccontent-placeholder-isempty)'); //var rhcElemInit = $('.story-rhccontent-placeholder.story-rhccontent-placeholder-completed'); //PWVD-749 //var classesToExclude = ['init', 'processing', 'finished'].map( cls => '.story-rhccontent-placeholder-' + cls); //, 'isempty' //rhcElemInit = rhcElemInit.find( classesToExclude.join(',') ).remove(); if(rhcEl && (canAdd.canAddRHCItem || hasInsertIfNoRHCSpace) && rhcElementsInitialised.length == 0) { googletag.cmd.push(function() { insertRHCSlot(rhcEl); }); } } function updateRHCFirstandLastItemStyles() { d.querySelectorAll('#rhcreflow-extra > *:not(.story-rhccontent-placeholder-init):not(.story-rhccontent-placeholder-processing):not(.story-rhccontent-placeholder-isempty)').forEach(function(item, index, data) { item.classList.remove('story-rhccontent-placeholder-first'); item.classList.remove('story-rhccontent-placeholder-last'); if(index == 0) { item.classList.add('story-rhccontent-placeholder-first'); } if(index == data.length - 1) { item.classList.add('story-rhccontent-placeholder-last'); } }); if((d.querySelectorAll('.storytext .story-inlinecontent-placeholder.story-inlinecontent-placeholder-completed').length == d.querySelectorAll('.storytext .story-inlinecontent-placeholder.story-inlinecontent-placeholder-finished').length) && !d.querySelectorAll('.storytext .story-inlinecontent-placeholder.story-inlinecontent-placeholder-init').length) { d.body.classList.add('enhanced-advertising-inline-completed'); } else { d.body.classList.remove('enhanced-advertising-inline-completed'); } } w.addEventListener('scroll', function(e) { if(!ticking) { w.requestAnimationFrame(function() { processElementsInViewport(); readjusRHCHeight(); ticking = false; }); ticking = true; } }, true); w.addEventListener('resize', function(e) { if(!ticking) { w.requestAnimationFrame(function() { processElementsInViewport(); readjusRHCHeight(); ticking = false; }); ticking = true; } }, true); w.addEventListener("abacus:loadcontent:complete", function(evt, context) { readjusRHCHeight(); }, true); if(d.querySelector('#story .storytext img.lazyload')) { d.addEventListener('lazyloaded', function(e) { if(w.googletag && googletag.apiReady) { if(getClosestParent(e.target, '.storytext')) { readjusRHCHeight(); } } }); } w.addEventListener("abacus:advertb:loaded", function(evt, context) { readjusRHCHeight(); }, true); w.addEventListener("abacus:gamadvert:loaded", function(evt, context) { readjusRHCHeight(); }, true); w.addEventListener("abacus:readjusrhcheight", function(evt, context) { readjusRHCHeight(); }, true); //w.addEventListener('abacus:inlinecontentrender', function(customEvent) { // slotRender(customEvent); //}, true); } }); })(window, document); </script>   <link rel="stylesheet" href="https://assets.chemistryworld.com/common/css/story_2024.css?v=202407161007" media="print" onload="this.media='all'">  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.setAttributeNode(d.createAttribute('data-ot-ignore'));j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-MS3J9G');</script>  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-PPW2GJH');</script>    <script type='text/javascript'> window.googletag = window.googletag || { cmd: [] }; googletag.cmd.push(function() { var isStory = document.querySelector('body#story') != null; var isSpin = document.querySelector('body#spin2') != null; var isAvStory = document.querySelector('body#story.story-style-6, body#story.story-style-5') != null; var isOther = (!isSpin && !isStory && !isAvStory); /* || Size Mapping || */ var mapMpuAD = googletag.sizeMapping(). addSize([0, 0], [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]]). build(); var mapMpuB = googletag.sizeMapping(). addSize([1024, 0], [[300, 1050], [300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250]]). addSize([0, 0], [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]]). build(); var mapMpuCEF = googletag.sizeMapping(). addSize([1024, 0], [[300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250]]). addSize([0, 0], [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]]). build(); var mapLeaderboard = googletag.sizeMapping(). addSize([1024, 0], [[970, 250], [980, 90], [980, 120], [970, 90], [728, 90]]). addSize([768, 0], [[728, 90], [468, 60]]). addSize([0, 0], [[320, 100], [320, 50]]). build(); /* || Targeting for all slots || */ googletag.pubads().setTargeting('UserState', ((typeof advanceData === 'undefined' || advanceData === null)) ? 'Signed out' : 'Signed in'); googletag.pubads().setTargeting('UserSubState', ((typeof advanceData === 'undefined' || advanceData === null) && (IPState.useripstate)) ? 'IP signed out' : (typeof advanceData === 'undefined' || advanceData === null) ? 'Casual' : (advanceData !== undefined && advanceData.imis !== undefined) ? 'Member' : (advanceData !== undefined && advanceData.products !== undefined) ? 'Subscriber' : (advanceData !== undefined && (IPState.useripstate)) ? 'IP signed in' : 'Registered'); googletag.pubads().setTargeting('PrimaryNav', (dataLayer) ? dataLayer.filter(function(el) { return el && el.PrimaryNavCurrent && el.PrimaryNavCurrent != 'null'; }).map(function(el) { return el.PrimaryNavCurrent; }).join('') : ''); googletag.pubads().setTargeting('PageTitle', (dataLayer) ? dataLayer.filter(function(el) { return el && el.Title && el.Title != 'null'; }).map(function(el) { return el.Title; }).join('') : ''); googletag.pubads().setTargeting('HasReferrer', (dataLayer) ? dataLayer.filter(function(el) { return el && el.HasReferrer && el.HasReferrer != 'null'; }).map(function(el) { return el.HasReferrer; }).join('') : ''); googletag.pubads().setTargeting('IPAccess', (dataLayer) ? dataLayer.filter(function(el) { return el && el.IPAccess && el.IPAccess != 'null'; }).map(function(el) { return el.IPAccess; }).join('') : ''); googletag.pubads().setTargeting('IPOrg', (dataLayer) ? dataLayer.filter(function(el) { return el && el.IPOrg && el.IPOrg != 'null'; }).map(function(el) { return el.IPOrg; }).join('') : ''); if (isStory) { googletag.pubads().setTargeting('StoryID', (dataLayer) ? dataLayer.filter(function(el) { return el && el.StoryID && el.StoryID != 'null'; }).map(function(el) { return el.StoryID; }).join('') : ''); googletag.pubads().setTargeting('Bylines', (dataLayer) ? dataLayer.filter(function(el) { return el && el.Bylines && el.Bylines != 'null'; }).map(function(el) { return el.Bylines; }).join('') : ''); googletag.pubads().setTargeting('Categories', (dataLayer) ? dataLayer.filter(function(el) { return el && el.Categories && el.Categories != 'null'; }).map(function(el) { return el.Categories; }).join('') : ''); }; /* || Define and call slots for specific pages || */ /* Story */ if (isStory) { // Leaderboard Top googletag.defineSlot('/97414310/Leaderboard_Top', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()); //Leaderboard bottom googletag.defineSlot('/97414310/CW_Bottom_Leaderboard', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1579525223270-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()); // MPU C googletag.defineSlot('/97414310/CW_MPU_Related', [[300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-5'). defineSizeMapping(mapMpuCEF). addService(googletag.pubads()); // MPU D googletag.defineSlot('/97414310/CW_MPU_Comments', [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]], 'div-gpt-ad-1469192590885-3'). defineSizeMapping(mapMpuAD). addService(googletag.pubads()); // MPU E googletag.defineSlot('/97414310/CW_MPU_More', [[300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-4'). defineSizeMapping(mapMpuCEF). addService(googletag.pubads()); googletag.pubads().enableLazyLoad({ fetchMarginPercent: 4, renderMarginPercent: 2, mobileScaling: 2.0 }); googletag.enableServices(); }; /* SPIN */ if (isSpin) { var slots = [ // Leaderboard Top googletag.defineSlot('/97414310/Leaderboard_Top', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()), // Leaderboard Inline 1 googletag.defineSlot('/97414310/CW_Leaderboard_Inline_1', [[320, 50], [970, 90], [970, 250], [980, 90], [980, 120], [468, 60], [320, 100], [728, 90]], 'div-gpt-ad-leadeboard-inline-1') .defineSizeMapping(mapLeaderboard) .setCollapseEmptyDiv(true) .addService(googletag.pubads()), // Leaderboard Inline 2 googletag.defineSlot('/97414310/CW_Leaderboard_Inline_2', [[320, 50], [970, 90], [970, 250], [980, 90], [980, 120], [468, 60], [320, 100], [728, 90]], 'div-gpt-ad-leadeboard-inline-2') .defineSizeMapping(mapLeaderboard) .setCollapseEmptyDiv(true) .addService(googletag.pubads()), // Leaderboard Inline 3 googletag.defineSlot('/97414310/CW_Leaderboard_Inline_3', [[320, 50], [970, 90], [970, 250], [980, 90], [980, 120], [468, 60], [320, 100], [728, 90]], 'div-gpt-ad-leadeboard-inline-3') .defineSizeMapping(mapLeaderboard) .setCollapseEmptyDiv(true) .addService(googletag.pubads()) ]; googletag.pubads().disableInitialLoad(); googletag.pubads().enableSingleRequest(); googletag.enableServices(); googletag.pubads().refresh([slots[0]]); googletag.pubads().enableLazyLoad({ fetchMarginPercent: 4, renderMarginPercent: 2, mobileScaling: 2.0 }); googletag.pubads().refresh([slots[1], slots[2], slots[3]]); }; // AV story if (isAvStory) { // Leaderboard Top googletag.defineSlot('/97414310/Leaderboard_Top', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()); //Leaderboard bottom googletag.defineSlot('/97414310/CW_Bottom_Leaderboard', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1579525223270-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()); // MPU A googletag.defineSlot('/97414310/MPU_Top', [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]], 'div-gpt-ad-1469192590885-2'). defineSizeMapping(mapMpuAD). addService(googletag.pubads()); // MPU C googletag.defineSlot('/97414310/CW_MPU_Related', [[300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-5'). defineSizeMapping(mapMpuCEF). addService(googletag.pubads()); // MPU D googletag.defineSlot('/97414310/CW_MPU_Comments', [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]], 'div-gpt-ad-1469192590885-3'). defineSizeMapping(mapMpuAD). addService(googletag.pubads()); // MPU E googletag.defineSlot('/97414310/CW_MPU_More', [[300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-4'). defineSizeMapping(mapMpuCEF). addService(googletag.pubads()); // MPU F googletag.defineSlot('/97414310/CW_MPU_AV', [[300, 250], [160, 600], [300, 600], [320, 50], [200, 200], [320, 100], [250, 250], [336, 280], [120, 600]], 'div-gpt-ad-1594300296324-0'). defineSizeMapping(mapMpuCEF). addService(googletag.pubads()); googletag.pubads().enableLazyLoad({ fetchMarginPercent: 4, renderMarginPercent: 2, mobileScaling: 2.0 }); googletag.enableServices(); }; /* Other pages (not enhanced ads) */ if (isOther) { var slots = [ // Leaderboard Top googletag.defineSlot('/97414310/Leaderboard_Top', [[970, 250], [980, 90], [970, 90], [728, 90], [468, 60], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-0'). defineSizeMapping(mapLeaderboard). addService(googletag.pubads()), // MPU A googletag.defineSlot('/97414310/MPU_Top', [[336, 280], [300, 250], [320, 100], [320, 50], [200, 200], [250, 250]], 'div-gpt-ad-1469192590885-2'). defineSizeMapping(mapMpuAD). addService(googletag.pubads()), // MPU B googletag.defineSlot('/97414310/MPU_Bottom', [[300, 1050], [300, 600], [120, 600], [160, 600], [336, 280], [300, 250], [200, 200], [250, 250], [320, 100], [320, 50]], 'div-gpt-ad-1469192590885-1'). defineSizeMapping(mapMpuB). addService(googletag.pubads()) ]; googletag.pubads().disableInitialLoad(); googletag.pubads().enableSingleRequest(); googletag.enableServices(); googletag.pubads().refresh([slots[0]]); googletag.pubads().enableLazyLoad({ fetchMarginPercent: 4, renderMarginPercent: 2, mobileScaling: 2.0 }); googletag.pubads().refresh([slots[1], slots[2]]); }; }); </script> </head> <body id="story" class="M1-master js-disabled story-style-1 story-format-1021 story-type-1106 enhanced-advertising enhanced-advertising-rhc-empty">  <noscript><iframe 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width="50" height="50" class="lazyloaded" /></a><a href="https://www.chemistryworld.com/raychelle-burks/1900.bio" rel="author">Raychelle Burks</a></span><span class="date" data-date-timezone="{"publishdate": "2025-02-14T09:30:00","format": "D MMMM YYYY"}">2025-02-14T09:30:00+00:00</span></p> </div> </div> </div> <div id="columns" class="container"> <div id="colwrapper" class="inner-sleeve"> <div id="colmain" role="main" class="restrictedcontent"> <div id="content"> <div id="content_sleeve"> <div class="contentWrapper"> <div class="storyContentWrapper"> <div class="pageOptions"> <ul> <li> <div class="share-toolbar"> <a class="social-share" data-source="facebook" data-medium="social" title="Share this on Facebook"> <svg xmlns="http://www.w3.org/2000/svg" fill="#4267B2" width="20" height="20" viewBox="0 0 24 24"> <path d="M9 8h-3v4h3v12h5v-12h3.642l.358-4h-4v-1.667c0-.955.192-1.333 1.115-1.333h2.885v-5h-3.808c-3.596 0-5.192 1.583-5.192 4.615v3.385z" /> </svg> </a> <a class="social-share" 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class="commentIcon"> </div></a></li> <li class=" last" aria-live="polite" data-cache-bust="true" data-ajax-load-content="" data-url="/4020844/bookmark"> </li> </ul> </div> <div class="articleWrapper"> <div class="articleContent"> <div class="standfirst"><p>The forensic techniques distinguishing between cosmetic details</p></div><div class="storytext"><p>Our modern <a class="external" href="https://www.npr.org/2011/02/14/133693152/the-dark-origins-of-valentines-day">Valentine’s Day</a> may seem all love and romance, but this holiday demands celebrants make a series of <a class="external" href="https://www.cbsnews.com/pittsburgh/news/the-valentines-day-decisions-how-to-best-honor-the-loved-ones-in-your-life/">crucial decisions</a>. Which <a class="external" href="https://www.psychologytoday.com/intl/blog/maybe-its-just-me/201102/who-is-valentines-day-really-anywa">relationships</a> and <a class="external" href="https://www.usatoday.com/story/life/2024/02/12/galentines-day-meaning-ideas/72537757007/">loved ones</a> will one <a class="external" href="https://www.brides.com/history-of-valentines-day-5217490">recognise</a>? Will the <a class="external" href="https://www.townandcountrymag.com/society/a14108881/best-flowers-for-valentines-day/">flower choice</a> be roses, orchids or tulips? Should the <a class="external" href="https://www.esquire.com/food-drink/food/g38552716/best-valentines-chocolate-candy/%20">chocolate</a> be a luxury brand or a homemade treat? Which <a class="external" href="https://parade.com/living/valentines-day-messages">message</a> to scribble on that Valentine’s Day card?</p> <p>To demonstrate <a class="external" href="https://www.npr.org/2011/02/14/133693152/the-dark-origins-of-valentines-day">‘kissy face fealty’</a>, perhaps the most critical choice is deciding which <a class="external" href="https://www.color-hex.com/color-palette/1009054">Cupid colour</a> of lipstick to don on the day. From the lightest of pinks to the deepest of reds, the staggering number of lipstick tints and types can easily overwhelm wearers seeking just the right romantic lip rouge. Cosmetics <a class="external" href="https://www.mefeater.com/lovedaybeauty-best-red-lipsticks-valentines-day/">experts</a> and <a class="external" href="https://www.vogue.com/article/best-red-lipstick-how-to-choose-skin-type-color-matte-gloss-mac-patrick-ta">artists</a> are invaluable here, considering both <a class="external" href="https://www.vogue.in/content/how-to-choose-your-perfect-red-lipstick-for-valentines-day-according-to-skin-tone">wearer</a> and event details. A different set of experts also spends a tremendous amount of time selecting just the right lipsticks – forensic cosmetic analysts.</p> <div class="inline_image inline_image_right image_size_med" data-attachment="539246" data-sequence="1"> <p class="picture"><img alt="Woman applying lipstick" src="https://d2cbg94ubxgsnp.cloudfront.net/Pictures/480xAny/2/4/6/539246_gettyimages958330770_73076.jpg" srcset="https://d2cbg94ubxgsnp.cloudfront.net/Pictures/480xAny/2/4/6/539246_gettyimages958330770_73076.jpg 480w" loading="eager" class="lazyloaded" width="5616" height="3744"></p> <div class="inline_meta"><p class="inline_source"><cite>Source: © Cavan Images/Getty Images</cite></p><p class="inline_caption">Finding the perfect lipstick is a challenge (in different ways ) for make-up artists and forensic analysts   </p></div></div> <p>Due to lipstick’s ease and prevalence of transfer, traces of this cosmetic may be encountered on a variety of surfaces at a crime scene or on persons involved in incidents under investigation. Besides contact traces resulting from contact between people and objects, lipsticks can – and have – been <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">used for criminal communications</a> (such as threatening and offensive messages) or to obstruct vision (by smearing lipstick over a door viewer, for example).<sup>1</sup> <a class="external" href="https://doi.org/10.1016/j.forsciint.2019.02.044">Careful analysis</a> of collected cosmetic marks, smears and traces <del cite="mailto:Emma%20Pewsey" datetime="2025-01-20T15:05"></del>may aid investigations by indicating that a person has been in a particular place, or has interacted with another person or object of interest.<sup>2</sup><a href="https://paperpile.com/c/PBGz78/7Vvl"><sup><br></sup></a></p> <p>Forensic analysis featuring the comparison of lipsticks’ chemical composition appears to have originated in the 1950s, with chromatographic techniques becoming popular choices – especially given the various ingredients in lipsticks.<sup>1,2</sup> Lip colourants have been in use since antiquity and their composition has <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">changed with time</a>. <a class="external" href="https://doi.org/10.1111/1556-4029.14945">Modern lipsticks</a> are chiefly composed of oils (60-70%), waxes (15-25%), and colourants (5%), with other minor additives mixed in to impart scent, increase product longevity or provide additional aesthetic appeal (for example, metallic or pearlescent effects).<sup>1–3</sup><a href="https://paperpile.com/c/PBGz78/kWKg+7Vvl+ULNk"><sup><br></sup></a></p> <h3>Characteristic formulations</h3> <p>Lipsticks, like other mass produced consumer products, can be so similar that individualisation to a particular product is an insurmountable challenge. However, many lipstick formulations are characteristic enough to enable <a class="external" href="https://doi.org/10.1016/j.forc.2019.100209">forensic discrimination</a> with suitable technique selection.<sup>1–6</sup> Longstanding go-to lipstick analysis techniques like <a class="external" href="https://www.sigmaaldrich.com/US/en/technical-documents/technical-article/analytical-chemistry/thin-layer-chromatography/tlc-history">thin layer chromatography</a>, <a class="external" href="https://doi.org/10.1016/S0165-9936(02)00806-3">gas chromatography</a>, and <a class="external" href="https://cen.acs.org/articles/94/i24/50-years-HPLC.html">high-performance liquid chromatography</a> offer discriminatory power, but share the <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">drawback</a> of destructive sample preparation.<a href="https://paperpile.com/c/PBGz78/7Vvl+6tnp"><sup><br></sup></a></p> <p><a href="/6455.article">Vibrational spectroscopic techniques</a> have emerged in recent years as top non-destructive lipstick characterisation options. <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">Infrared (IR) techniques</a> could be considered to have streaked past Raman techniques in lipstick analysis due to fluorescence interference issues generally associated with Raman spectroscopy.<sup>2,5,6</sup> However, Raman’s fluorescence interference issue can be sufficiently <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">addressed</a> via experimental parameters or operations such as laser wavelength selection or baseline correction. While not separation techniques, IR techniques and Raman techniques have enabled analysts to classify lipsticks at impressive levels.</p> <p>The promise of attenuated total reflectance Fourier transform infrared (ATR–FTIR) paired with chemometric methods for lipstick comparative analysis was first demonstrated in 2017 by <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">Marta Gładysz and colleagues</a> at Jagiellonian University in Poland. They differentiated 38 red lipsticks from 20 manufacturers with the researchers’<ins cite="mailto:Radium%20Yttrium" datetime="2025-01-20T17:27"></ins><del cite="mailto:Radium%20Yttrium" datetime="2025-01-20T17:27"> </del>calculated discriminatory power of 0.93 between each examined pair of lipstick samples.<sup>1</sup> </p> <p><a class="external" href="https://doi.org/10.1111/1556-4029.14945">Additional work</a> by Gładysz and collaborators, along with research from other groups, further illustrated that <span class="rangySelectionBoundary" id="selectionBoundary_1739185186229_8192026977885194" style="line-height: 0; display: none;"></span>ATR–FTIR paired with chemometrics<span class="rangySelectionBoundary" id="selectionBoundary_1739185186229_6430774300309596" style="line-height: 0; display: none;"></span> can classify even the most visually similar red lipsticks for a range of lip rouge types and manufacturers.<sup>3</sup> In the pink, <a class="external" href="https://doi.org/10.1016/j.vibspec.2023.103640">Rowdha Abdulla Alblooshi and co-workers</a> recently noted that for 20 pink lipsticks from a single manufacturer, 95.8% of samples could be differentiated from each other using a combination of Raman microscopy and vacuum ATR–FTIR spectroscopy with accompanying chemometric analysis.<sup>4</sup></p> <p> While Valentine’s Day can bring too many decisions, forensic cosmetic analysts can rely on analytical chemistry to discern among <a class="external" href="https://www.color-hex.com/color-palette/1009054">Valentine’s Day colour palette</a> lipsticks.</p></div><div id="storytext-end" class="storytext-end"></div><div class="storyMeta"><h3>References</h3><p>1 M Gładysz, M Król and P Kościelniak, <em>Forensic Sci. Int.</em>, 2017, <strong>280</strong>, 130 (DOI: <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019">10.1016/j.forsciint.2017.09.019</a>)</p> <p>2 J X W Wong, G Sauzier and S W Lewis, <em>Forensic Sci. Int.</em>, 2019, <strong>298</strong>, 88 (DOI: <a class="external" href="https://doi.org/10.1016/j.forsciint.2019.02.044">10.1016/j.forsciint.2019.02.044</a>)</p> <p>3 M Gładysz <em>et al</em>, <em>J. Forensic Sci.</em>, 2022, <strong>67</strong>, 494 (DOI: <a class="external" href="https://doi.org/10.1111/1556-4029.14945">10.1111/1556-4029.14945</a>)</p> <p>4 R A Alblooshi <em>et al</em>, <em>Vib. Spectrosc.</em>, 2024, <strong>130</strong>, 103640 (DOI: <a class="external" href="https://doi.org/10.1016/j.vibspec.2023.103640">10.1016/j.vibspec.2023.103640</a>)</p> <p>5 R Chophi, S Sharma, and R Singh, <em>Forensic Chem</em>., 2020, <strong>17</strong>, 100209 (DOI: <a class="external" title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.forc.2019.100209">10.1016/j.forc.2019.100209</a>)</p> <p>6 M Gładysz, M Król, and P Kościelniak, <em>Forensic Sci. Int.</em>, 2017, <strong>280</strong>, 130 (DOI: <a class="external" href="https://doi.org/10.1016/j.forsciint.2017.09.019" data-ga-category="full_text" data-ga-action="DOI">10.1016/j.forsciint.2017.09.019</a>)</p></div><div class="storyAuthorComponent"><div class="storyAuthor"><div class="storyAuthorContainer"><a href="https://www.chemistryworld.com/raychelle-burks/1900.bio" rel="author" class="authorPicture"><img alt="Raychelle Burks" loading="lazy" sizes="(max-width:767px) 74px, 112px" src="https://d2cbg94ubxgsnp.cloudfront.net/Pictures/112x112/P/Pictures%2Fweb%2Fo%2Fq%2Fh%2F02_RaychelleBurks.jpg" srcset="https://d2cbg94ubxgsnp.cloudfront.net/Pictures/74x74/P/Pictures%2Fweb%2Fo%2Fq%2Fh%2F02_RaychelleBurks.jpg 74w,https://d2cbg94ubxgsnp.cloudfront.net/Pictures/112x112/P/Pictures%2Fweb%2Fo%2Fq%2Fh%2F02_RaychelleBurks.jpg 112w" width="74" height="74" class="lazyloaded" /></a><div class="storyAuthorDetails"><span class="author"><a 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