// SurfStats JavaScript Code to store original referrer info.
// Put this file in an accessible location on your site and 
// call saveReferrerCookie() from your pages.

function getCookieVal (offset) {  
	var endstr = document.cookie.indexOf (";", offset);  
	if (endstr == -1)    
		endstr = document.cookie.length;  
	return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
			return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}

// Write the cookie to remember user only if the cookie is not on user's computer
function	saveReferrerCookie() {
	todayDate = new Date;
	id = todayDate;
	id= todayDate.getTime(); 

	var ref="" +document.referrer;
	var se="" +document.location.search;
	var agt=""+document.agent;
	var url=""+document.URL;

	if(top.document.location==document.referrer || (document.referrer == '' && 
top.document.location != 
'')) {
		ref=""+top.document.referrer;
		se=""+top.document.location.search;
		agt=""+top.document.agent;
		url=""+top.document.URL;
	}

	s="ref="+ref;
	s+="&id="+id;
	s+="&agt="+agt;
	s+="&url="+url;
	s+="&se="+se;
	expireDate = new Date;
	expireDate.setMonth(expireDate.getMonth()+1);

	var id2 = GetCookie('SurfDetails');
	i = ref.indexOf(url);

	if ((i < 0) || (id2 == null))  {
			document.cookie = "SurfDetails="+s+";expires=" + 
expireDate.toGMTString();
	}
}