// WebTrends SmartSource Data Collector Tag

// Version: 8.6.0     

// Tag Builder Version: 2.1.0

// Created: 04/17/2009 4:49:40

// Updated: 04/06/2010

function WebTrends(){

var that=this;

// begin: user modifiable

this.dcsid="dcsxsg78c00000474nn5e45vh_7s9n";

this.domain="statse.webtrendslive.com";

this.timezone=-5;

this.fpcdom="";

this.onsitedoms="www.nature.com, blog-msb.embo.org, blogs.nature.com,cmckb.cellmigration.org, connotea.org, functionalglycomics.com, go.nature.com, guide.labanimal.com, kb.psi-structuralgenomics.org, lipidmaps.org, nature.com, natureasia.com, naturechina.com.cn, network.nature.com, neuroscience-gateway.org, pid.nci.nih.gov, precedings.nature.com, scintilla.nature.com, secure.nature.com, signaling-gateway.org, spotlight.nature.com, npg.nature.com, press.nature.com , palgrave-connect.com, www.cellmigration.org, www.connotea.org, www.econolog.net, www.functionalglycomics.org, www.labanimal.com, www.lipidmaps.org, www.natureasia.com, www.neuroscience-gateway.org, www.palgrave-journals.com, www.rikenresearch.riken.jp, www.scitable.com, www.signaling-gateway.org, cmkb.cellmigration.org, nrgwiki.nature.com, www.iaor-palgrave.com, www.natureprotocols.com, media.nature.com";

this.downloadtypes="xls,doc,pdf,ris,txt,csv,zip,mp3,mp4,mov,AVI,bin,bmp,BMP,cdx,cml,CSS,css,dat,db,exe,Exe,GIF,gif,gz,HTM,jar,java,jpg,mol,pkg,png,ppt,psd,rss,sgml,tab,TAB,tgz,ttf,TXT,utf,xml,rdf";

this.metanames="Access, citation_title, citation_journal_title, citation_date,citation_volume,citation_issue,citation_doi";

this.trackevents=true;

this.enabled=true;

this.i18n=false;

this.fpc="WT_FPC";

// end: user modifiable

this.DCS={};

this.WT={};

this.DCSext={};

this.images=[];

this.index=0;

this.qp=[];

this.exre=(function(){return(window.RegExp?new RegExp("dcs(uri)|(ref)|(aut)|(met)|(sta)|(sip)|(pro)|(byt)|(dat)|(p3p)|(cfg)|(redirect)|(cip)","i"):"");})();

this.re=(function(){return(window.RegExp?(that.i18n?{"%25":/\%/g}:{"%09":/\t/g,"%20":/ /g,"%23":/\#/g,"%26":/\&/g,"%2B":/\+/g,"%3F":/\?/g,"%5C":/\\/g,"%22":/\"/g,"%7F":/\x7F/g,"%A0":/\xA0/g}):"");})();

}

WebTrends.prototype.dcsGetId=function(){

if (this.enabled&&(document.cookie.indexOf(this.fpc+"=")==-1)&&(document.cookie.indexOf("WTLOPTOUT=")==-1)){

document.write("<scr"+"ipt type='text/javascript' src='"+"http"+(window.location.protocol.indexOf('https:')==0?'s':'')+"://"+this.domain+"/"+this.dcsid+"/wtid.js"+"'><\/scr"+"ipt>");

}

}

WebTrends.prototype.dcsGetCookie=function(name){

var cookies=document.cookie.split("; ");

var cmatch=[];

var idx=0;

var i=0;

var namelen=name.length;

var clen=cookies.length;

for (i=0;i<clen;i++){

var c=cookies[i];

if ((c.substring(0,namelen+1))==(name+"=")){

cmatch[idx++]=c;

}

}

var cmatchCount=cmatch.length;

if (cmatchCount>0){

idx=0;

if ((cmatchCount>1)&&(name==this.fpc)){

var dLatest=new Date(0);

for (i=0;i<cmatchCount;i++){

var lv=parseInt(this.dcsGetCrumb(cmatch[i],"lv"));

var dLst=new Date(lv);

if (dLst>dLatest){

dLatest.setTime(dLst.getTime());

idx=i;

}

}

}

return unescape(cmatch[idx].substring(namelen+1));

}

else{

return null;

}

}

WebTrends.prototype.dcsGetCrumb=function(cval,crumb,sep){

var aCookie=cval.split(sep||":");

for (var i=0;i<aCookie.length;i++){

var aCrumb=aCookie[i].split("=");

if (crumb==aCrumb[0]){

return aCrumb[1];

}

}

return null;

}

WebTrends.prototype.dcsGetIdCrumb=function(cval,crumb){

var id=cval.substring(0,cval.indexOf(":lv="));

var aCrumb=id.split("=");

for (var i=0;i<aCrumb.length;i++){

if (crumb==aCrumb[0]){

return aCrumb[1];

}

}

return null;

}

WebTrends.prototype.dcsIsFpcSet=function(name,id,lv,ss){

var c=this.dcsGetCookie(name);

if (c){

return ((id==this.dcsGetIdCrumb(c,"id"))&&(lv==this.dcsGetCrumb(c,"lv"))&&(ss==this.dcsGetCrumb(c,"ss")))?0:3;

}

return 2;

}

WebTrends.prototype.dcsFPC=function(){

if (document.cookie.indexOf("WTLOPTOUT=")!=-1){

return;

}

var WT=this.WT;

var name=this.fpc;

var dCur=new Date();

var adj=(dCur.getTimezoneOffset()*60000)+(this.timezone*3600000);

dCur.setTime(dCur.getTime()+adj);

var dExp=new Date(dCur.getTime()+315360000000);

var dSes=new Date(dCur.getTime());

WT.co_f=WT.vtid=WT.vtvs=WT.vt_f=WT.vt_f_a=WT.vt_f_s=WT.vt_f_d=WT.vt_f_tlh=WT.vt_f_tlv="";

if (document.cookie.indexOf(name+"=")==-1){

if ((typeof(gWtId)!="undefined")&&(gWtId!="")){

WT.co_f=gWtId;

}

else if ((typeof(gTempWtId)!="undefined")&&(gTempWtId!="")){

WT.co_f=gTempWtId;

WT.vt_f="1";

}

else{

WT.co_f="2";

var curt=dCur.getTime().toString();

for (var i=2;i<=(32-curt.length);i++){

WT.co_f+=Math.floor(Math.random()*16.0).toString(16);

}

WT.co_f+=curt;

WT.vt_f="1";

}

if (typeof(gWtAccountRollup)=="undefined"){

WT.vt_f_a="1";

}

WT.vt_f_s=WT.vt_f_d="1";

WT.vt_f_tlh=WT.vt_f_tlv="0";

}

else{

var c=this.dcsGetCookie(name);

var id=this.dcsGetIdCrumb(c,"id");

var lv=parseInt(this.dcsGetCrumb(c,"lv"));

var ss=parseInt(this.dcsGetCrumb(c,"ss"));

if ((id==null)||(id=="null")||isNaN(lv)||isNaN(ss)){

return;

}

WT.co_f=id;

var dLst=new Date(lv);

WT.vt_f_tlh=Math.floor((dLst.getTime()-adj)/1000);

dSes.setTime(ss);

if ((dCur.getTime()>(dLst.getTime()+1800000))||(dCur.getTime()>(dSes.getTime()+28800000))){

WT.vt_f_tlv=Math.floor((dSes.getTime()-adj)/1000);

dSes.setTime(dCur.getTime());

WT.vt_f_s="1";

}

if ((dCur.getDay()!=dLst.getDay())||(dCur.getMonth()!=dLst.getMonth())||(dCur.getYear()!=dLst.getYear())){

WT.vt_f_d="1";

}

}

WT.co_f=escape(WT.co_f);

WT.vtid=(typeof(this.vtid)=="undefined")?WT.co_f:(this.vtid||"");

WT.vtvs=(dSes.getTime()-adj).toString();

var expiry="; expires="+dExp.toGMTString();

var cur=dCur.getTime().toString();

var ses=dSes.getTime().toString();

document.cookie=name+"="+"id="+WT.co_f+":lv="+cur+":ss="+ses+expiry+"; path=/"+(((this.fpcdom!=""))?("; domain="+this.fpcdom):(""));

var rc=this.dcsIsFpcSet(name,WT.co_f,cur,ses);

if (rc!=0){

WT.co_f=WT.vtvs=WT.vt_f_s=WT.vt_f_d=WT.vt_f_tlh=WT.vt_f_tlv="";

if (typeof(this.vtid)=="undefined"){

WT.vtid="";

}

WT.vt_f=WT.vt_f_a=rc;

    }

}

// Code section for Assign your query parameters to WebTrends query parameters. You will also need to configure the tag to recognize your query parameters.

WebTrends.prototype.dcsQP=function(N){

if (typeof(N)=="undefined"){

return "";

}

var qry=location.search.substring(1);

if (qry!=""){

var pairs=qry.split("&");

for (var i=0;i<pairs.length;i++){

var pos=pairs[i].indexOf("=");

if (pos!=-1){

if (pairs[i].substring(0,pos)==N){

this.qp[this.qp.length]=(i==0?"":"&")+pairs[i];

return pairs[i].substring(pos+1);

}

}

}

}

return "";

}

WebTrends.prototype.dcsIsOnsite=function(host){

if (host.length>0){

    host=host.toLowerCase();

    if (host==this.getHost()){

    return true;

    }

    if (this.isonsiteHelper(host))

    {

     return true;

   }

    if (typeof(this.onsitedoms.test)=="function"){

    return this.onsitedoms.test(host);

    }

    else if (this.onsitedoms.length>0){

    var doms=this.dcsSplit(this.onsitedoms);

    var len=doms.length;

    for (var i=0;i<len;i++){

    if (host==doms[i]){

        return true;

    }

    }

    }

}

return false;

}

WebTrends.prototype.dcsTypeMatch=function(pth, typelist){

var type=pth.substring(pth.lastIndexOf(".")+1,pth.length);

var types=this.dcsSplit(typelist);

var tlen=types.length; 

for (var i=0;i<tlen;i++){

if (type==types[i]){

return true;

}

}

return false;

}

WebTrends.prototype.dcsEvt=function(evt,tag){

var e=evt.target||evt.srcElement;

while (e.tagName&&(e.tagName!=tag)){

e=e.parentElement||e.parentNode;

}

return e;

}

WebTrends.prototype.dcsNavigation=function(evt){

return "";

}

WebTrends.prototype.dcsBind=function(event,func){

if ((typeof(func)=="function")&&document.body){

if (document.body.addEventListener){

document.body.addEventListener(event, func.wtbind(this), true);

}

else if(document.body.attachEvent){

document.body.attachEvent("on"+event, func.wtbind(this));

}

}

}

WebTrends.prototype.dcsET=function(){

var e=(navigator.appVersion.indexOf("MSIE")!=-1)?"click":"click";

this.dcsBind(e,this.dcsDownload);

this.dcsBind(e,this.dcsOffsite);

}

WebTrends.prototype.dcsMultiTrack=function(){

var args=dcsMultiTrack.arguments?dcsMultiTrack.arguments:arguments;

if (args.length%2==0){

this.dcsSetProps(args);

var dCurrent=new Date();

this.DCS.dcsdat=dCurrent.getTime();

this.dcsFPC();

this.dcsTag();

}

}

WebTrends.prototype.dcsCleanUp=function(){

this.DCS={};

this.WT={};

this.DCSext={};

if (arguments.length%2==0){

this.dcsSetProps(arguments);

}

}

WebTrends.prototype.dcsSetProps=function(args){

for (var i=0;i<args.length;i+=2){

if (args[i].indexOf('WT.')==0){

this.WT[args[i].substring(3)]=args[i+1];

}

else if (args[i].indexOf('DCS.')==0){

this.DCS[args[i].substring(4)]=args[i+1];

}

else if (args[i].indexOf('DCSext.')==0){

this.DCSext[args[i].substring(7)]=args[i+1];

}

}

}

WebTrends.prototype.dcsSplit=function(list){

var items=list.toLowerCase().split(",");

var len=items.length;

for (var i=0;i<len;i++){

items[i]=items[i].replace(/^\s*/,"").replace(/\s*$/,"");

}

return items;

}

// Code section for Track clicks to download links.

WebTrends.prototype.dcsDownload=function(evt){

evt=evt||(window.event||"");

if (evt&&((typeof(evt.which)!="number")||(evt.which==1))){

var e=this.dcsEvt(evt,"A");

if (e.href){

    var hn=e.hostname?(e.hostname.split(":")[0]):"";

    if (this.dcsIsOnsite(hn)&&this.dcsTypeMatch(e.pathname,this.downloadtypes)){

        var qry=e.search?e.search.substring(e.search.indexOf("?")+1,e.search.length):"";

        var pth=e.pathname?((e.pathname.indexOf("/")!=0)?"/"+e.pathname:e.pathname):"/";

        var ttl="";

        var text=document.all?e.innerText:e.text;

        var img=this.dcsEvt(evt,"IMG");

        if (img.alt){

        ttl=img.alt;

        }

        else if (text){

        ttl=text;

        }

        else if (e.innerHTML){

        ttl=e.innerHTML;

        }

        this.dcsMultiTrack("DCS.dcssip",hn,"DCS.dcsuri",pth,"DCS.dcsqry",e.search||"","WT.ti","Download:"+ttl,"WT.dl","20","WT.ndl","0","WT.nv",this.dcsNavigation(evt));

        this.DCS.dcssip=this.DCS.dcsuri=this.DCS.dcsqry=this.WT.ti=this.WT.dl=this.WT.nv=this.WT.ndl="";

    }

}

}

}

// Code section for Track clicks to links leading offsite.

WebTrends.prototype.dcsOffsite=function(evt){

evt=evt||(window.event||"");

if (evt&&((typeof(evt.which)!="number")||(evt.which==1))){

var e=this.dcsEvt(evt,"A");

if (e.href){

    var hn=e.hostname?(e.hostname.split(":")[0]):"";

    var pr=e.protocol||"";

    if ((hn.length>0)&&(pr.indexOf("http")==0)&&!this.dcsIsOnsite(hn)){

    var qry=e.search?e.search.substring(e.search.indexOf("?")+1,e.search.length):"";

    var pth=e.pathname?((e.pathname.indexOf("/")!=0)?"/"+e.pathname:e.pathname):"/";

    var trim=true;

    this.dcsMultiTrack("DCS.dcssip",hn,"DCS.dcsuri",pth,"DCS.dcsqry",trim?"":qry,"WT.ti","Offsite:"+hn+pth+qry,"WT.dl","24","WT.ndl","24","WT.nv",this.dcsNavigation(evt));

    this.DCS.dcssip=this.DCS.dcsuri=this.DCS.dcsqry=this.WT.ti=this.WT.dl=this.WT.nv=this.WT.ndl="";

    }

}

}

}

// Code section for Enable custom meta tag capture.

WebTrends.prototype.dcsMetaCap=function(){

var elems;

if (document.all){

elems=document.all.tags("meta");

}

else if (document.documentElement){

elems=document.getElementsByTagName("meta");

}

if (typeof(elems)!="undefined"){

var names=this.dcsSplit(this.metanames);

var nlen=names.length;

var elen=elems.length;

for (var i=0;i<elen;i++){

var name=elems.item(i).name.toLowerCase();

var content=elems.item(i).content;

if ((name.length>0)&&(content.length>0)){

for(var j=0;j<nlen;j++){

if (name==names[j]){

this.DCSext["meta_"+names[j]]=content;

break;

}

}

}

}

}

}

WebTrends.prototype.dcsAdv=function(){

if (this.trackevents&&(typeof(this.dcsET)=="function")){

if (window.addEventListener){

window.addEventListener("load",this.dcsET.wtbind(this),false);

}

else if (window.attachEvent){

window.attachEvent("onload",this.dcsET.wtbind(this));

}

}

this.dcsFPC();

this.dcsMetaCap();

}

WebTrends.prototype.dcsVar=function(){

var dCurrent=new Date();

var WT=this.WT;

var DCS=this.DCS;

WT.tz=parseInt(dCurrent.getTimezoneOffset()/60*-1)||"0";

WT.bh=dCurrent.getHours()||"0";

WT.ul=navigator.appName=="Netscape"?navigator.language:navigator.userLanguage;

if (typeof(screen)=="object"){

WT.cd=navigator.appName=="Netscape"?screen.pixelDepth:screen.colorDepth;

WT.sr=screen.width+"x"+screen.height;

}

if (typeof(navigator.javaEnabled())=="boolean"){

WT.jo=navigator.javaEnabled()?"Yes":"No";

}

if (document.title){

if (window.RegExp){

var tire=new RegExp("^"+window.location.protocol+"//"+this.getHost()+"\\s-\\s");

WT.ti=document.title.replace(tire,"");

}

else{

WT.ti=document.title;

}

}

WT.js="Yes";

WT.jv=(function(){

var agt=navigator.userAgent.toLowerCase();

var major=parseInt(navigator.appVersion);

var mac=(agt.indexOf("mac")!=-1);

var ff=(agt.indexOf("firefox")!=-1);

var ff0=(agt.indexOf("firefox/0.")!=-1);

var ff10=(agt.indexOf("firefox/1.0")!=-1);

var ff15=(agt.indexOf("firefox/1.5")!=-1);

var ff20=(agt.indexOf("firefox/2.0")!=-1);

var ff3up=(ff&&!ff0&&!ff10&!ff15&!ff20);

var nn=(!ff&&(agt.indexOf("mozilla")!=-1)&&(agt.indexOf("compatible")==-1));

var nn4=(nn&&(major==4));

var nn6up=(nn&&(major>=5));

var ie=((agt.indexOf("msie")!=-1)&&(agt.indexOf("opera")==-1));

var ie4=(ie&&(major==4)&&(agt.indexOf("msie 4")!=-1));

var ie5up=(ie&&!ie4);

var op=(agt.indexOf("opera")!=-1);

var op5=(agt.indexOf("opera 5")!=-1||agt.indexOf("opera/5")!=-1);

var op6=(agt.indexOf("opera 6")!=-1||agt.indexOf("opera/6")!=-1);

var op7up=(op&&!op5&&!op6);

var jv="1.1";

if (ff3up){

jv="1.8";

}

else if (ff20){

jv="1.7";

}

else if (ff15){

jv="1.6";

}

else if (ff0||ff10||nn6up||op7up){

jv="1.5";

}

else if ((mac&&ie5up)||op6){

jv="1.4";

}

else if (ie5up||nn4||op5){

jv="1.3";

}

else if (ie4){

jv="1.2";

}

return jv;

})();

WT.ct="unknown";

if (document.body&&document.body.addBehavior){

try{

document.body.addBehavior("#default#clientCaps");

WT.ct=document.body.connectionType||"unknown";

document.body.addBehavior("#default#homePage");

WT.hp=document.body.isHomePage(location.href)?"1":"0";

}

catch(e){

}

}

if (document.all){

WT.bs=document.body?document.body.offsetWidth+"x"+document.body.offsetHeight:"unknown";

}

else{

WT.bs=window.innerWidth+"x"+window.innerHeight;

}

WT.fv=(function(){

var i,flash;

if (window.ActiveXObject){

for(i=10;i>0;i--){

try{

flash=new ActiveXObject("ShockwaveFlash.ShockwaveFlash."+i);

return i+".0";

}

catch(e){

}

}

}

else if (navigator.plugins&&navigator.plugins.length){

for (i=0;i<navigator.plugins.length;i++){

if (navigator.plugins[i].name.indexOf('Shockwave Flash')!=-1){

return navigator.plugins[i].description.split(" ")[2];

}

}

}

return "Not enabled";

})();

WT.slv=(function(){

var slv="Not enabled";

try{     

if (navigator.userAgent.indexOf('MSIE')!=-1){

var sli = new ActiveXObject('AgControl.AgControl');

if (sli){

slv="Unknown";

}

}

else if (navigator.plugins["Silverlight Plug-In"]){

slv="Unknown";

}

}

catch(e){

}

if (slv!="Not enabled"){

var i,j,v;

if ((typeof(Silverlight)=="object")&&(typeof(Silverlight.isInstalled)=="function")){

for (j=9;j>=0;j--){

for(i=3;i>0;i--){

v=i+"."+j;

if (Silverlight.isInstalled(v)){

slv=v;

break;

}

}

if (slv==v){

break;

}

}

}

}

return slv;

})();

if (this.i18n){

if (typeof(document.defaultCharset)=="string"){

WT.le=document.defaultCharset;

} 

else if (typeof(document.characterSet)=="string"){

WT.le=document.characterSet;

}

else{

WT.le="unknown";

}

}

WT.tv="8.6.0";

// WT.sp="@@SPLITVALUE@@";

WT.dl="0";

WT.ndl="0";

WT.ssl=(window.location.protocol.indexOf('https:')==0)?"1":"0";

DCS.dcsdat=dCurrent.getTime();

DCS.dcssip=this.getHost();

DCS.dcsuri=window.location.pathname;

WT.es=DCS.dcssip+DCS.dcsuri;

if (window.location.search){

DCS.dcsqry=window.location.search;

if (this.qp.length>0){

for (var i=0;i<this.qp.length;i++){

var pos=DCS.dcsqry.indexOf(this.qp[i]);

if (pos!=-1){

var front=DCS.dcsqry.substring(0,pos);

var end=DCS.dcsqry.substring(pos+this.qp[i].length,DCS.dcsqry.length);

DCS.dcsqry=front+end;

}

}

}

}

if ((window.document.referrer!="")&&(window.document.referrer!="-")){

if (!(navigator.appName=="Microsoft Internet Explorer"&&parseInt(navigator.appVersion)<4)){

DCS.dcsref=window.document.referrer;

}

}

}

WebTrends.prototype.dcsEscape=function(S, REL){

if (REL!=""){

S=S.toString();

for (var R in REL){

   if (REL[R] instanceof RegExp){

S=S.replace(REL[R],R);

   }

}

return S;

}

else{

return escape(S);

}

}

WebTrends.prototype.dcsA=function(N,V){

if (this.i18n&&(this.exre!="")&&!this.exre.test(N)){

if (N=="dcsqry"){

var newV="";

var params=V.substring(1).split("&");

for (var i=0;i<params.length;i++){

var pair=params[i];

var pos=pair.indexOf("=");

if (pos!=-1){

var key=pair.substring(0,pos);

var val=pair.substring(pos+1);

if (i!=0){

newV+="&";

}

newV+=key+"="+this.dcsEncode(val);

}

}

V=V.substring(0,1)+newV;

}

else{

V=this.dcsEncode(V);

}

}

return "&"+N+"="+this.dcsEscape(V, this.re);

}

WebTrends.prototype.dcsEncode=function(S){

return (typeof(encodeURIComponent)=="function")?encodeURIComponent(S):escape(S);

}

WebTrends.prototype.dcsCreateImage=function(dcsSrc){

if (document.images){

this.images[this.index]=new Image();

this.images[this.index].src=dcsSrc;

this.index++;

}

else{

document.write('<IMG ALT="" BORDER="0" NAME="DCSIMG" WIDTH="1" HEIGHT="1" SRC="'+dcsSrc+'">');

}

}

WebTrends.prototype.dcsMeta=function(){

var elems;

if (document.all){

elems=document.all.tags("meta");

}

else if (document.documentElement){

elems=document.getElementsByTagName("meta");

}

if (typeof(elems)!="undefined"){

var length=elems.length;

for (var i=0;i<length;i++){

var name=elems.item(i).name;

var content=elems.item(i).content;

var equiv=elems.item(i).httpEquiv;

if (name.length>0){

if (name.toUpperCase().indexOf("WT.")==0){

this.WT[name.substring(3)]=content;

}

else if (name.toUpperCase().indexOf("DCSEXT.")==0){

this.DCSext[name.substring(7)]=content;

}

else if (name.toUpperCase().indexOf("DCS.")==0){

this.DCS[name.substring(4)]=content;

}

}

}

}

}

WebTrends.prototype.dcsTag=function(){

if (document.cookie.indexOf("WTLOPTOUT=")!=-1){

return;

}

var WT=this.WT;

var DCS=this.DCS;

var DCSext=this.DCSext;

var i18n=this.i18n;

var P="http"+(window.location.protocol.indexOf('https:')==0?'s':'')+"://"+this.domain+(this.dcsid==""?'':'/'+this.dcsid)+"/dcs.gif?";

if (i18n){

WT.dep="";

}

for (var N in DCS){

  if (DCS[N]&&(typeof DCS[N]!="function")){

P+=this.dcsA(N,DCS[N]);

}

}

var keys=["co_f","vtid","vtvs","vt_f_tlv"];

for (var i=0;i<keys.length;i++){

var key=keys[i];

if (WT[key]){

P+=this.dcsA("WT."+key,WT[key]);

delete WT[key];

}

}

for (N in WT){

if (WT[N]&&(typeof WT[N]!="function")){

P+=this.dcsA("WT."+N,WT[N]);

}

}

for (N in DCSext){

if (DCSext[N]&&(typeof DCSext[N]!="function")){

if (i18n){

WT.dep=(WT.dep.length==0)?N:(WT.dep+";"+N);

}

P+=this.dcsA(N,DCSext[N]);

}

}

if (i18n&&(WT.dep.length>0)){

P+=this.dcsA("WT.dep",WT.dep);

}

if (P.length>2048&&navigator.userAgent.indexOf('MSIE')>=0){

P=P.substring(0,2040)+"&WT.tu=1";

}

this.dcsCreateImage(P);

this.WT.ad="";

}

WebTrends.prototype.dcsDebug=function(){

var t=this;

var i=t.images[0].src;

var q=i.indexOf("?");

var r=i.substring(0,q).split("/");

var m="<b>Protocol</b><br><code>"+r[0]+"<br></code>";

m+="<b>Domain</b><br><code>"+r[2]+"<br></code>";

m+="<b>Path</b><br><code>/"+r[3]+"/"+r[4]+"<br></code>";

m+="<b>Query Params</b><code>"+i.substring(q+1).replace(/\&/g,"<br>")+"</code>";

m+="<br><b>Cookies</b><br><code>"+document.cookie.replace(/\;/g,"<br>")+"</code>";

if (t.w&&!t.w.closed){

t.w.close();

}

t.w=window.open("","dcsDebug","width=500,height=650,scrollbars=yes,resizable=yes");

t.w.document.write(m);

t.w.focus();

}

WebTrends.prototype.isonsiteHelper=function(host)

{

    var osda=this.onsitedoms.split(",");

    var len=osda.length;

    for (x=0; x<len; x++)

    {

     var o=osda[x].trim();

     if (host.indexOf(o.toLowerCase())==0)

     {

      return true;

     }

    }

    return false; 

}

WebTrends.prototype.dcsCollect=function(){

    if (this.enabled){

        this.dcsVar();

        this.dcsMeta();

        this.dcsAdv();

        this.dcsTag();

    }

}

//custom function to get window host

WebTrends.prototype.getHost=function(){

    host = window.location.hostname.toLowerCase();

    //if host starts with www.nature.com but also includes gatway domain (is longer than 14 char)

    if ((host.substr(0,14)=="www.nature.com")&&(host.length>14)) {

        _tag.DCSext.gateway=host.substr(14,host.length);

        //return trimed version of host name

        return host.substr(0,14);

    } else {

        //else return full host

        return host;

    }

}

function dcsMultiTrack(){

if (typeof(_tag)!="undefined"){

return(_tag.dcsMultiTrack());

}

}

function dcsDebug(){

if (typeof(_tag)!="undefined"){

return(_tag.dcsDebug());

}

}

Function.prototype.wtbind = function(obj){

var method=this;

var temp=function(){

return method.apply(obj,arguments);

};

return temp;

}

String.prototype.trim = function () {

    return this.replace(/^\s*/, "").replace(/\s*$/, "");

}