function sitestat(ns_l){
	// update any pdf links
	var lightRegID=getLightRegID();
	if(lightRegID!="") updatePDFLinks(lightRegID);

// FromUrl v1.5 Copyright (c) 2001-2007 Nedstat B.V. All rights reserved.
var ns_type=''	// leave empty for normal/ppc measurement, fill in for clickin, clickout or pdf
var r=''		// yes=only parse url when there is a real document.referrer,
				// no=only parse url when there is no real document.referrer, empty=always parse url
var t='#'		// tag in url where parameters follow; default '?' could be replaced by "#"
var p=new Array();
var w='';
var l='';
var d=document;
var n=navigator;
var ns_0='';
if(top!=self)
	{
	if('\u0041'=='A')
		{
		var u=n.userAgent;
		if(u.indexOf('Safari')==-1)
			{
			var b=u.indexOf('Opera');
			if(b==-1||(u.charAt(b+6)+0)>5)
				{
				b=u.indexOf('Mozilla');
				var xb=b!=-1?u.charAt(b+8)>4:1;
				if(u.indexOf('compatible')!=-1||xb)
					{
					var c='try{ns_0=top.document.referrer}catch(e){}';
					eval(c);
					c='try{l=top.document.location.href}catch(e){}';
					eval(c);
					}
				}
			}
		}
	}
	else
		{
		ns_0=d.referrer;
		l=d.location.href;
		}
	if(ns_0.lastIndexOf('/')==ns_0.length-1)
		{
		ns_0=ns_0.substring(ns_0.lastIndexOf('/'),0);
		}
	var f=ns_l.indexOf('?');
	if(f!=-1)
		{
		var q=ns_l.substring(f+1);
		ns_l=ns_l.substring(0,f);
		if(q)
			{
			var m=q.indexOf('&');
			w=q.substring(0,m==-1?q.length:m);
			if(w.indexOf('=')!=-1)
				{w='';}
			if(w)
				{
				q=q.substring(m==-1?q.length:m+1);
				q+=(q?'&':'')+'ns_name='+w;
				}
			if(ns_0.length>0)
				{q+=(q?'&':'')+'ns_referrer='+escape(ns_0);}
			var s=0;
			var e=0;
			while(q.length)
				{
				e=q.indexOf('&');
				if(e==-1)
					{e=q.length;}
				var o=q.substring(s,e);
				if(o.substring(0,4)=='amp;')
					{o=o.substring(4);}
				if(o)
					p[p.length]=o;
				q=q.substring(e+1);
				}
			}
		}
	var a=l.indexOf(t);
	a=a==-1?0:l.substring(a+1);
	var j;
	if(r=='yes')
		j=ns_0.length;
	else
		if(r=='no')
			j=!ns_0.length;
		else if(r=='')j=1;
	if(a&&j)
		{
		while(a.length)
			{
			var e=a.indexOf('&');
			if(e==-1)
				{e=a.length;}
			var k=a.substring(0,a.substring(0,e).indexOf('='));
			var v=a.substring(a.substring(0,e).indexOf('=')+1,e);
			if(k.substring(0,4)=='amp;')
			{k=k.substring(4);}
			while(v.substring(0,1)=='=')
				{v=v.substring(1);}
			if(k=='ns_name')
				{w=v;}
			else if(k=='ns_or')
				{
				var g='ns_referrer=';
				for(var z=0;z<p.length;z++)
					{
					if(p[z].substring(0,g.length)==g)
						{p[z]='ns_referrer='+v;}
					}
				}
			else
				{
				if(k.substring(0,3)=='ns_'&&v&&k)
					{
					var h=0;
					for(var x=0;x<p.length;x++)
						{
						if(p[x].substring(0,p[x].indexOf('='))==k)
							{p[x]=k+"="+v;h=1}
						}
					if(!h)
						{p[p.length]=k+"="+v;}
					}
				}
			a=a.substring(e+1);
			}
		}
		if(!w)
			{return;}
		var s='';
		var y='';
		for(var i=0;i<p.length;i++)
			if(p[i].substring(0,8)!='ns_name=')
				{
				if(p[i].substring(0,12)!='ns_referrer=')
					{s+='&'+p[i];}
				else
					{y='&'+p[i];}
				}
		s+=ns_type?'&ns_type='+ns_type+'&ns_action=view':'';
		ns_pixelUrl=ns_l+'?'+w+"&ns__t="+(new Date()).getTime();
		ns_l=ns_pixelUrl+s+y;
		ns_l+=lightRegID;
		if(d.images)
			{
			ns_1=new Image();
			ns_1.src=ns_l;
			}
		else
			{d.write('<img src='+ns_l+' width="1" height="1">');}
} 

function getLightRegID(){
	var LightRegCookie = "PWCLIGHTREG";
	var userID = getCookie(LightRegCookie);
	if(userID!=""){
		return "&cookie_id="+userID;
	}else{
		return "";
	}
}
function updatePDFLinks(lightRegID){
	var links=document.links;
	for(l=0;l<links.length;l++){
		var url=links[l].href;
		var urlLS=url.toLowerCase();
		if(urlLS.indexOf("ns_type=pdf")>0 || urlLS.indexOf("ns_type=clickin")>0 || urlLS.indexOf("ns_type=clickout")>0){
			// if there is an ns_url entry we must put the lightreg cookie id
			// before it so it doesnt get mixed up with value of ns_url parameter
			// which is the url to return to after going to sitestat
			var u=urlLS.indexOf("&ns_url=");
			if(u==-1){
				url+=lightRegID;
			}else{
				url=url.substring(0,u)+lightRegID+url.substring(u);
			}
			links[l].href=url;
		}					
	}
}
function updatePDFLinksFromURL(pdflink){
	var sp = pdflink.indexOf("ukws.eng_publications");
	pdflink = pdflink.substr(0,sp+21)+".pdf"+pdflink.substr(sp+21)+"_pdf";
	var links=document.links;
	for(l=0;l<links.length;l++){
		if(links[l].href.toLowerCase().indexOf(".pdf")>0){
			url=pdflink+"&ns_type=pdf"+getLightRegID()+"&ns_url="+links[l].href;
			links[l].href=url;
		}					
	}
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}

function hideEditLink(){
	var editLink = document.getElementById("LightRegEdit");
	if(editLink != null) {
		if(getLightRegID() == "") {
			editLink.style.display = "none";		 
		} else {
			editLink.style.display = "inline";		 
		}
	}
}