");vwo_$('head').append(_vwo_sel);return vwo_$('head')[0] && vwo_$('head')[0].lastChild;})("HEAD")}}, R_743027_63_1_3_0:{ fn:function(log,nonce=''){return (function(x) { if(!vwo_$.fn.vwoRevertHtml){ return; }; var ctx=vwo_$(x),el; /*vwo_debug log("Revert","content",""); vwo_debug*/; el=vwo_$('[vwo-element-id="1745439018283"]'); el.revertContentOp().remove();})("HEAD")}}, C_743027_24_1_2_0:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("addElement","body"); vwo_debug*/(el=vwo_$("html.vwo_p_s_5fb751d886e005826a169c4b42c0329f body")).each((function(o,r){var a=vwo_$(r);!a.find('[vwo-op-1706297283313=""]').length&&a.vwoElement({html:'',position:"append"})}));})("body")}}, C_743027_24_1_2_1:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("rearrange2","#vwo-wc-banner"); vwo_debug*/el=vwo_$("html.vwo_p_s_5fb751d886e005826a169c4b42c0329f #vwo-wc-banner"),vwo_$("html.vwo_p_s_5fb751d886e005826a169c4b42c0329f .universal-nav").not('[vwo-op-1706297283314=""]').length&&el.each((function(){var e=vwo_$("html.vwo_p_s_5fb751d886e005826a169c4b42c0329f .universal-nav"),a=vwo_$(".universal-nav > #url-mapper-msg");e.length&&e.attr("vwo-op-1706297283314",""),a.length?a.before(this):e.append(this)})),(el=vwo_$("html.vwo_p_s_6a25fa9f346c1093eb75f8cbb134de46 div.cont-main > div:nth-of-type(1) > div:nth-of-type(2) > div > div:nth-of-type(1) > header > div:nth-of-type(2)")).replaceWith('

Welcome to OCLC! If you are looking for information or materials from a library, visit WorldCat.org to search for resources in a library near you and thousands of libraries around the world.

'),el=vwo_$("html.vwo_p_s_6a25fa9f346c1093eb75f8cbb134de46 div.cont-main > div:nth-of-type(1) > div:nth-of-type(2) > div > div:nth-of-type(1) > header > div:nth-of-type(2)"),(el=vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 .header.parbase.section > header:nth-of-type(1) > div:nth-of-type(2)")).each((function(e,a){var o=vwo_$(a);!o.find('[vwo-op-1706297283316=""]').length&&o.vwoElement({position:"prepend",html:''})})),(el=vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 .header.parbase.section > header:nth-of-type(1) > div:nth-of-type(2)")).each((function(e,a){var o=vwo_$(a);!o.find('[vwo-op-1706297283318=""]').length&&o.vwoElement({position:"prepend",html:''})}));})("#vwo-wc-banner,div.cont-main > div:nth-of-type(1) > div:nth-of-type(2) > div > div:nth-of-type(1) > header > div:nth-of-type(2),.header.parbase.section > header:nth-of-type(1) > div:nth-of-type(2),.header.parbase.section > header:nth-of-type(1) > div:nth-of-type(2)")}}, C_743027_24_1_3_0:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("addElement","body"); vwo_debug*/!(el=vwo_$("html.vwo_p_s_fc6fc6cab21772a6d0df93c5ab347165 body")).find('[vwo-op-1706297246351=""]').length&&el.vwoElement({html:'',position:"append"}),(el=vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 body")).each((function(e,o){var n=vwo_$(o);!n.find('[vwo-op-1706297246352=""]').length&&n.vwoElement({html:'',position:"append"})}));})("body")}}, C_743027_24_1_3_1:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("rearrange2","#vwo-wc-banner"); vwo_debug*/el=vwo_$("html.vwo_p_s_fc6fc6cab21772a6d0df93c5ab347165 #vwo-wc-banner"),vwo_$("html.vwo_p_s_fc6fc6cab21772a6d0df93c5ab347165 .universal-nav").not('[vwo-op-1706297246353=""]').length&&el.each((function(){var e=vwo_$("html.vwo_p_s_fc6fc6cab21772a6d0df93c5ab347165 .universal-nav"),a=vwo_$(".universal-nav > #url-mapper-msg");e.length&&e.attr("vwo-op-1706297246353",""),a.length?a.before(this):e.append(this)})),el=vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 #vwo-wc-banner"),vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 .universal-nav").not('[vwo-op-1706297246354=""]').length&&el.each((function(){var e=vwo_$("html.vwo_p_s_db073418e304e27f8c68ace9cee46ea1 .universal-nav"),a=vwo_$(".universal-nav > #url-mapper-msg");e.length&&e.attr("vwo-op-1706297246354",""),a.length?a.before(this):e.append(this)}));})("#vwo-wc-banner,#vwo-wc-banner")}}, C_743027_24_1_4_0:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("addElement","body"); vwo_debug*/!(el=vwo_$("html.vwo_p_s_f87ab5235e4c817697a44b3593ea45cb body")).find('[vwo-op-1706297246449=""]').length&&el.vwoElement({html:'',position:"append"}),(el=vwo_$("html.vwo_p_s_e13ba198269ceecb614562575db0d5d0 body")).each((function(e,n){var i=vwo_$(n);!i.find('[vwo-op-1706297246450=""]').length&&i.vwoElement({html:'',position:"append"})}));})("body")}}, C_743027_24_1_4_1:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("rearrange2","#vwo-wc-banner"); vwo_debug*/el=vwo_$("html.vwo_p_s_f87ab5235e4c817697a44b3593ea45cb #vwo-wc-banner"),vwo_$("html.vwo_p_s_f87ab5235e4c817697a44b3593ea45cb .universal-nav").not('[vwo-op-1706297246451=""]').length&&el.each((function(){var e=vwo_$("html.vwo_p_s_f87ab5235e4c817697a44b3593ea45cb .universal-nav"),a=vwo_$(".universal-nav > #url-mapper-msg");e.length&&e.attr("vwo-op-1706297246451",""),a.length?a.before(this):e.append(this)})),el=vwo_$("html.vwo_p_s_e13ba198269ceecb614562575db0d5d0 #vwo-wc-banner"),vwo_$("html.vwo_p_s_e13ba198269ceecb614562575db0d5d0 .universal-nav").not('[vwo-op-1706297246452=""]').length&&el.each((function(){var e=vwo_$("html.vwo_p_s_e13ba198269ceecb614562575db0d5d0 .universal-nav"),a=vwo_$(".universal-nav > #url-mapper-msg");e.length&&e.attr("vwo-op-1706297246452",""),a.length?a.before(this):e.append(this)}));})("#vwo-wc-banner,#vwo-wc-banner")}}},rules:[{"triggers":["13418928"],"tags":[{"metricId":256165,"id":"metric","data":{"type":"m","campaigns":[{"c":48,"g":1}]}},{"metricId":256165,"id":"metric","data":{"type":"m","campaigns":[{"c":67,"g":1}]}}]},{"triggers":["11348713","11348716","11607274"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.50"}]},{"triggers":["3926488","3926491","3926494","3926497","3926500","3926503","3926506","3926509"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.24"}]},{"triggers":["11348776"],"tags":[{"metricId":1246453,"id":"metric","data":{"type":"m","campaigns":[{"c":57,"g":2}]}}]},{"triggers":["10597825","10597828","10597831"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.53"}]},{"triggers":["9901843"],"tags":[{"metricId":1094613,"id":"metric","data":{"type":"m","campaigns":[{"c":50,"g":1}]}},{"metricId":1094613,"id":"metric","data":{"type":"m","campaigns":[{"c":53,"g":1}]}}]},{"triggers":["3204947"],"tags":[{"metricId":394880,"id":"metric","data":{"type":"m","campaigns":[{"c":24,"g":1}]}}]},{"triggers":["3699301"],"tags":[{"metricId":393026,"id":"metric","data":{"type":"m","campaigns":[{"c":23,"g":1}]}}]},{"triggers":["7538455"],"tags":[{"metricId":856873,"id":"metric","data":{"type":"m","campaigns":[{"c":45,"g":2}]}}]},{"triggers":["3891109"],"tags":[{"metricId":460042,"id":"metric","data":{"type":"m","campaigns":[{"c":23,"g":2}]}},{"metricId":460042,"id":"metric","data":{"type":"m","campaigns":[{"c":52,"g":3}]}}]},{"triggers":["10859356"],"tags":[{"metricId":1209280,"id":"metric","data":{"type":"m","campaigns":[{"c":52,"g":2}]}}]},{"triggers":["3467935","3467937","4049039"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.33"}]},{"triggers":["11218597"],"tags":[{"metricId":0,"id":"metric","data":{"type":"g","campaigns":[{"c":23,"g":3}]}}]},{"triggers":["12415740"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.62"}]},{"triggers":["7538449"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.52"}]},{"triggers":["7538449","7538452","13418922","13418925"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.67"}]},{"triggers":["3467935","3467937","3474327","3474329"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.26"}]},{"triggers":["4049042"],"tags":[{"metricId":0,"id":"metric","data":{"type":"g","campaigns":[{"c":33,"g":1}]}}]},{"triggers":["11901466"],"tags":[{"metricId":1302544,"id":"metric","data":{"type":"m","campaigns":[{"c":62,"g":2}]}}]},{"triggers":["13465485"],"tags":[{"metricId":1420032,"id":"metric","data":{"type":"m","campaigns":[{"c":63,"g":6}]}}]},{"triggers":["3474331"],"tags":[{"metricId":418573,"id":"metric","data":{"type":"m","campaigns":[{"c":26,"g":1}]}}]},{"triggers":["13465482"],"tags":[{"metricId":1420029,"id":"metric","data":{"type":"m","campaigns":[{"c":63,"g":5}]}}]},{"triggers":["11218462"],"tags":[{"metricId":1109587,"id":"metric","data":{"type":"m","campaigns":[{"c":62,"g":3}]}}]},{"triggers":["13465101"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.63"}]},{"triggers":["7538449","7538452"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.45"},{"priority":4,"id":"runCampaign","data":"campaigns.48","triggerIds":["7538449","7538452"]}]},{"triggers":["3467935","3467937","3891148","3868378","3868381","3699280","3868375","3868372","3868366","3868369","3868363","3868360"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.23"}]},{"triggers":["13531875","13531878"],"tags":[{"priority":4,"id":"runCampaign","data":"campaigns.57"}]},{"triggers":["2"],"tags":[{"id":"runTestCampaign"}]},{"triggers":["75"],"tags":[{"id":"urlChange"}]},{"triggers":["5"],"tags":[{"id":"checkEnvironment"}]},{"triggers":["8"],"tags":[{"priority":3,"id":"prePostMutation"},{"priority":2,"id":"groupCampaigns"}]},{"triggers":["9"],"tags":[{"priority":2,"id":"visibilityService"}]}],pages:{"ec":[{"567821":{"inc":["o",["url","urlReg","(?i).*https?\\:\\\/\\\/(w{3}\\.)?oclc\\.org.*"],["url","urlReg","(?i).*https?\\:\\\/\\\/(w{3}\\.)?blog\\.oclc\\.org.*"],["url","urlReg","(?i).*https?\\:\\\/\\\/(w{3}\\.)?policies\\.oclc\\.org.*"]]}},{"256778":{"inc":["o",["url","urlReg","(?i).*"]]}}]},pagesEval:{"ec":[567821,256778]},stags:{}}})(); ;;var commonWrapper=function(argument){if(!argument){argument={valuesGetter:function(){return{}},valuesSetter:function(){},verifyData:function(){return{}}}}const getVisitorUuid=function(){if(window._vwo_acc_id>=1037725){return window.VWO&&window.VWO.get("visitor.id")}else{return window.VWO._&&window.VWO._.cookies&&window.VWO._.cookies.get("_vwo_uuid")}};var pollInterval=100;var timeout=6e4;return function(){var accountIntegrationSettings={};var _interval=null;function waitForAnalyticsVariables(){try{accountIntegrationSettings=argument.valuesGetter();accountIntegrationSettings.visitorUuid=getVisitorUuid()}catch(error){accountIntegrationSettings=undefined}if(accountIntegrationSettings&&argument.verifyData(accountIntegrationSettings)){argument.valuesSetter(accountIntegrationSettings);return 1}return 0}var currentTime=0;_interval=setInterval((function(){currentTime=currentTime||performance.now();var result=waitForAnalyticsVariables();if(result||performance.now()-currentTime>=timeout){clearInterval(_interval)}}),pollInterval)}}; commonWrapper({valuesGetter:function(){return {"ga4s":0}},valuesSetter:function(data){var singleCall=data["ga4s"]||0;if(singleCall){window.sessionStorage.setItem("vwo-ga4-singlecall",true)}var ga4_device_id="";if(typeof window.VWO._.cookies!=="undefined"){ga4_device_id=window.VWO._.cookies.get("_ga")||""}if(ga4_device_id){window.vwo_ga4_uuid=ga4_device_id.split(".").slice(-2).join(".")}},verifyData:function(data){if(typeof window.VWO._.cookies!=="undefined"){return window.VWO._.cookies.get("_ga")||""}else{return false}}})(); var pushBasedCommonWrapper=function(argument){var firedCamp={};if(!argument){argument={integrationName:"",getExperimentList:function(){},accountSettings:function(){},pushData:function(){}}}return function(){window.VWO=window.VWO||[];const getVisitorUuid=function(){if(window._vwo_acc_id>=1037725){return window.VWO&&window.VWO.get("visitor.id")}else{return window.VWO._&&window.VWO._.cookies&&window.VWO._.cookies.get("_vwo_uuid")}};var sendDebugLogsOld=function(expId,variationId,errorType,user_type,data){try{var errorPayload={f:argument["integrationName"]||"",a:window._vwo_acc_id,url:window.location.href,exp:expId,v:variationId,vwo_uuid:getVisitorUuid(),user_type:user_type};if(errorType=="initIntegrationCallback"){errorPayload["log_type"]="initIntegrationCallback";errorPayload["data"]=JSON.stringify(data||"")}else if(errorType=="timeout"){errorPayload["timeout"]=true}if(window.VWO._.customError){window.VWO._.customError({msg:"integration debug",url:window.location.href,lineno:"",colno:"",source:JSON.stringify(errorPayload)})}}catch(e){window.VWO._.customError&&window.VWO._.customError({msg:"integration debug failed",url:"",lineno:"",colno:"",source:""})}};var sendDebugLogs=function(expId,variationId,errorType,user_type){var eventName="vwo_debugLogs";var eventPayload={};try{eventPayload={intName:argument["integrationName"]||"",varId:variationId,expId:expId,type:errorType,vwo_uuid:getVisitorUuid(),user_type:user_type};if(window.VWO._.event){window.VWO._.event(eventName,eventPayload,{enableLogs:1})}}catch(e){eventPayload={msg:"integration event log failed",url:window.location.href};window.VWO._.event&&window.VWO._.event(eventName,eventPayload)}};const callbackFn=function(data){if(!data)return;var expId=data[1],variationId=data[2],repeated=data[0],singleCall=0,debug=0;var experimentList=argument.getExperimentList();var integrationName=argument["integrationName"]||"vwo";if(typeof argument.accountSettings==="function"){var accountSettings=argument.accountSettings();if(accountSettings){singleCall=accountSettings["singleCall"];debug=accountSettings["debug"]}}if(debug){sendDebugLogs(expId,variationId,"intCallTriggered",repeated)}if(singleCall&&(repeated==="vS"||repeated==="vSS")||firedCamp[expId]){return}window.expList=window.expList||{};var expList=window.expList[integrationName]=window.expList[integrationName]||[];if(expId&&variationId&&["VISUAL_AB","VISUAL","SPLIT_URL"].indexOf(_vwo_exp[expId].type)>-1){if(experimentList.indexOf(+expId)!==-1){firedCamp[expId]=variationId;var visitorUuid=getVisitorUuid();var pollInterval=100;var currentTime=0;var timeout=6e4;var user_type=_vwo_exp[expId].exec?"vwo-retry":"vwo-new";var interval=setInterval((function(){if(expList.indexOf(expId)!==-1){clearInterval(interval);return}currentTime=currentTime||performance.now();var toClearInterval=argument.pushData(expId,variationId,visitorUuid);if(debug&&toClearInterval){sendDebugLogsOld(expId,variationId,"",user_type);sendDebugLogs(expId,variationId,"intDataPushed",user_type)}var isTimeout=performance.now()-currentTime>=timeout;if(isTimeout&&debug){sendDebugLogsOld(expId,variationId,"timeout",user_type);sendDebugLogs(expId,variationId,"intTimeout",user_type)}if(toClearInterval||isTimeout){clearInterval(interval)}if(toClearInterval){window.expList[integrationName].push(expId)}}),pollInterval||100)}}};window.VWO.push(["onVariationApplied",callbackFn]);window.VWO.push(["onVariationShownSent",callbackFn])}}; var validationUtils={exists:function(path){try{const parts=path.split(".");let current=window;for(const part of parts){if(current[part]===undefined){return false}current=current[part]}return true}catch(e){return false}},safeExecute:function(path,args=[]){try{const parts=path.split(".");let current=window;for(const part of parts){if(current[part]===undefined){return false}current=current[part]}if(typeof current!=="function"){return false}return current(...args)}catch(e){return false}},validateAll:function(paths){return paths.every(path=>this.exists(path))}}; var surveyDataCommonWrapper=function(argument){if(!argument){argument={getCampaignList:function(){return[]},surveyStatusChange:function(){},answerSubmitted:function(){}}}return function(){window.VWO=window.VWO||[];function getValuesFromAnswers(answers){var values=[];for(var i=0;i=timeout;if(toClearInterval||isTimeout){clearInterval(interval)}}),pollInterval)}}window.VWO.push(["onSurveyShown",function(data){commonSurveyCallback(data,argument.surveyStatusChange,"surveyShown")}]);window.VWO.push(["onSurveyCompleted",function(data){commonSurveyCallback(data,argument.surveyStatusChange,"surveyCompleted")}]);window.VWO.push(["onSurveyAnswerSubmitted",function(data){commonSurveyCallback(data,argument.answerSubmitted,"surveySubmitted")}])}}; (function(){var VWOOmniTemp={};window.VWOOmni=window.VWOOmni||{};for(var key in VWOOmniTemp)Object.prototype.hasOwnProperty.call(VWOOmniTemp,key)&&(window.VWOOmni[key]=VWOOmniTemp[key]);window._vwoIntegrationsLoaded=1;pushBasedCommonWrapper({integrationName:"GA4",getExperimentList:function(){return [21,24,26,1,23,33,45,53,52,62,63,50,67,57,48]},accountSettings:function(){var accountIntegrationSettings={"dataVariable":"dataLayer","setupVia":"gtm","manualSetup":true};if(accountIntegrationSettings["debugType"]=="ga4"&&accountIntegrationSettings["debug"]){accountIntegrationSettings["debug"]=1}else{accountIntegrationSettings["debug"]=0}return accountIntegrationSettings},pushData:function(expId,variationId){var accountIntegrationSettings={"dataVariable":"dataLayer","setupVia":"gtm","manualSetup":true};var ga4Setup=accountIntegrationSettings["setupVia"]||"gtag";if(ga4Setup==="gtag"){validationUtils.safeExecute("gtag",["event","VWO",{vwo_campaign_name:window._vwo_exp[expId].name+":"+expId,vwo_variation_name:window._vwo_exp[expId].comb_n[variationId]+":"+variationId}]);validationUtils.safeExecute("gtag",["event","experience_impression",{exp_variant_string:"VWO-"+expId+"-"+variationId}]);return true}return false}})();pushBasedCommonWrapper({integrationName:"GA4-GTM",getExperimentList:function(){return [21,24,26,1,23,33,45,53,52,62,63,50,67,57,48]},accountSettings:function(){var accountIntegrationSettings={"dataVariable":"dataLayer","setupVia":"gtm","manualSetup":true};if(accountIntegrationSettings["debugType"]=="gtm"&&accountIntegrationSettings["debug"]){accountIntegrationSettings["debug"]=1}else{accountIntegrationSettings["debug"]=0}return accountIntegrationSettings},pushData:function(expId,variationId){var accountIntegrationSettings={"dataVariable":"dataLayer","setupVia":"gtm","manualSetup":true};var ga4Setup=accountIntegrationSettings["setupVia"]||"gtm";var dataVariable=accountIntegrationSettings["dataVariable"]||"dataLayer";if(ga4Setup==="gtm"&&validationUtils.exists(dataVariable)&&Array.isArray(window[dataVariable])){window[dataVariable].push({event:"vwo-data-push-ga4",vwo_exp_variant_string:"VWO-"+expId+"-"+variationId});return true}return false}})(); ;})();(function(){window.VWO=window.VWO||[];var pollInterval=100;var _vis_data={};var intervalObj={};var analyticsTimerObj={};var experimentListObj={};window.VWO.push(["onVariationApplied",function(data){if(!data){return}var expId=data[1],variationId=data[2];if(expId&&variationId&&["VISUAL_AB","VISUAL","SPLIT_URL"].indexOf(window._vwo_exp[expId].type)>-1){}}])})();; ;var vD=VWO.data||{};VWO.data={content:{"fns":{"list":{"args":{"1":{}},"vn":1}}},as:"r4.visualwebsiteoptimizer.com",dacdnUrl:"https://dev.visualwebsiteoptimizer.com",accountJSInfo:{"rp":7,"gC":[{"t":1,"wt":{"20":1,"1":99},"c":[1,20],"id":1,"et":2},{"t":1,"c":[50,57],"et":2,"id":2,"p":[50,57]},{"t":1,"wt":{"68":25,"63":75},"c":[63,68],"id":3,"et":2}],"ts":1746218359,"noSS":false,"pc":{"t":0,"a":0},"pvn":-1}};for(var k in vD){VWO.data[k]=vD[k]};;var gcpfb=function(a,loadFunc,status,err,success){function vwoErr() {_vwo_err({message:"Google_Cdn failing for " + a + ". Trying Fallback..",code:"cloudcdnerr",status:status});} if(a.indexOf("/cdn/")!==-1){loadFunc(a.replace("cdn/",""),err,success); vwoErr(); return true;} else if(a.indexOf("/dcdn/")!==-1&&a.indexOf("evad.js") !== -1){loadFunc(a.replace("dcdn/",""),err,success); vwoErr(); return true;}};window.VWO=window.VWO || [];window.VWO._= window.VWO._ || {};window.VWO._.gcpfb=gcpfb;;var d={cookie:document.cookie,URL:document.URL,referrer:document.referrer};var w={VWO:{_:{}},location:{href:window.location.href,search:window.location.search},_vwoCc:window._vwoCc};;window._vwo_cdn="https://dev.visualwebsiteoptimizer.com/cdn/";window._vwo_apm_debug_cdn="https://dev.visualwebsiteoptimizer.com/cdn/";window.VWO._.useCdn=true;window.vwo_eT="br";window._VWO=window._VWO||{};window._VWO.fSeg=["1","21"];window._VWO.dcdnUrl="/dcdn/settings.js";window.VWO.sTs=1746214978;window._VWO._vis_nc_lib=window._vwo_cdn+"edrv/nc-54cfde37c5a3743bc2f6e91bb1c31abfbr.js";var loadWorker=function(url){_vwo_code.load(url, { dSC: true, onloadCb: function(xhr,a){window._vwo_wt_l=true;if(xhr.status===200 ||xhr.status===304){var code="var window="+JSON.stringify(w)+",document="+JSON.stringify(d)+";window.document=document;"+xhr.responseText;var blob=new Blob([code||"throw new Error('code not found!');"],{type:"application/javascript"}),url=URL.createObjectURL(blob);window.mainThread={webWorker:new Worker(url)};window.vwoChannelFW=new MessageChannel();window.vwoChannelToW=new MessageChannel();window.mainThread.webWorker.postMessage({vwoChannelToW:vwoChannelToW.port1,vwoChannelFW:vwoChannelFW.port2},[vwoChannelToW.port1, vwoChannelFW.port2]);if(!window._vwo_mt_f)return window._vwo_wt_f=true;_vwo_code.addScript({text:window._vwo_mt_f});delete window._vwo_mt_f}else{if(gcpfb(a,loadWorker,xhr.status)){return;}_vwo_code.finish("&e=loading_failure:"+a)}}, onerrorCb: function(a){if(gcpfb(a,loadWorker)){return;}window._vwo_wt_l=true;_vwo_code.finish("&e=loading_failure:"+a);}})};loadWorker("https://dev.visualwebsiteoptimizer.com/cdn/edrv/worker-aa7ffe63a93031e335ac2a7c312d4377br.js");;var _vis_opt_file;var _vis_opt_lib;if(window.VWO._.allSettings.dataStore.previewExtraSettings!=undefined&&window.VWO._.allSettings.dataStore.previewExtraSettings.isSurveyPreviewMode){var surveyHash=window.VWO._.allSettings.dataStore.plugins.LIBINFO.SURVEY_DEBUG_EVENTS.HASH;var param1="evad.js?va=";var param2="&d=debugger_new";var param3="&sp=1&a=743027&sh="+surveyHash;_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?param1+"vanj"+param2:param1+"va_gq"+param2:param1+"edrv/va_gq-df0ecc1bb02a7e73cd2e2a895835ec5cbr.js"+param2;_vis_opt_file=_vis_opt_file+param3;_vis_opt_lib="https://dev.visualwebsiteoptimizer.com/dcdn/"+_vis_opt_file}else if(window.VWO._.allSettings.dataStore.mode!=undefined&&window.VWO._.allSettings.dataStore.mode=="PREVIEW"){ var path1 = 'edrv/pd_'; var path2 = window.VWO._.allSettings.dataStore.plugins.LIBINFO.EVAD.HASH + ".js"; ;_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?path1+"vanj"+path2:path1+"va_gq"+path2:path1+"edrv/va_gq-df0ecc1bb02a7e73cd2e2a895835ec5cbr.js"+path2;_vis_opt_lib="https://dev.visualwebsiteoptimizer.com/cdn/"+_vis_opt_file}else{_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?"edrv/vanj-e70040e7d2d675ff50eeed490c144b1dbr.js":"edrv/va_gq-df0ecc1bb02a7e73cd2e2a895835ec5cbr.js":"edrv/va_gq-df0ecc1bb02a7e73cd2e2a895835ec5cbr.js"}window._vwo_library_timer=setTimeout((function(){vwoCode.removeLoaderAndOverlay&&vwoCode.removeLoaderAndOverlay();vwoCode.finish()}),vwoCode.library_tolerance&&typeof vwoCode.library_tolerance()!=="undefined"?vwoCode.library_tolerance():2500),_vis_opt_lib=typeof _vis_opt_lib=="undefined"?window._vwo_cdn+_vis_opt_file:_vis_opt_lib;var loadLib=function(url){_vwo_code.load(url, { dSC: true, onloadCb:function(xhr,a){window._vwo_mt_l=true;if(xhr.status===200 || xhr.status===304){if(!window._vwo_wt_f)return window._vwo_mt_f=xhr.responseText;_vwo_code.addScript({text:xhr.responseText});delete window._vwo_wt_f;}else{if(gcpfb(a,loadLib,xhr.status)){return;}_vwo_code.finish("&e=loading_failure:"+a);}}, onerrorCb: function(a){if(gcpfb(a,loadLib)){return;}window._vwo_mt_l=true;_vwo_code.finish("&e=loading_failure:"+a);}})};loadLib(_vis_opt_lib);VWO.load_co=function(u,opts){return window._vwo_code.load(u,opts);};;;}}catch(e){_vwo_code.finish();_vwo_code.removeLoaderAndOverlay&&_vwo_code.removeLoaderAndOverlay();_vwo_err(e);window.VWO.caE=1}})(); Member stories

JavaScript is currently not supported or is disabled by this browser.
Some features of this site will not be available. Please enable JavaScript for full functionality.

Member stories

OCLC is its members. We are owned, supported, and led by our member libraries, whose input guides everything we do. From involvement in major research studies to piloting new products and informing strategic direction, we rely on them for guidance, governance, and advice.