/* Client-side access to querystring name=value pairs
	Version 1.2.3
	22 Jun 2005
	Adam Vandenberg
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = new Object()
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,location.search.length)

	if (qs.length == 0) return

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ')
	var args = qs.split('&') // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=')
		var name = unescape(pair[0])

		if (pair.length == 2)
			value = unescape(pair[1])
		else
			value = name
		
		this.params[name] = value
	}
}

function Querystring_get(key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	
	return value
}

function Get_Cookie(name) { 
   var start = document.cookie.indexOf(name+"="); 
   var len = start+name.length+1; 
   if ((!start) && (name != document.cookie.substring(0,name.length))) return null; 
   if (start == -1) return null; 
   var end = document.cookie.indexOf(";",len); 
   if (end == -1) end = document.cookie.length; 
   return unescape(document.cookie.substring(len,end)); 
} 

function Set_Cookie(name,value,expires,path,domain,secure) { 
    var cookieString = name + "=" +escape(value) + 
       ( (expires) ? ";expires=" + expires.toGMTString() : "") + 
       ( (path) ? ";path=" + path : "") + 
       ( (domain) ? ";domain=" + domain : "") + 
       ( (secure) ? ";secure" : ""); 
    document.cookie = cookieString; 
} 

function Delete_Cookie(name,path,domain) { 
   if (Get_Cookie(name)) document.cookie = name + "=" + 
      ( (path) ? ";path=" + path : "") + 
      ( (domain) ? ";domain=" + domain : "") + 
      ";expires=Thu, 01-Jan-70 00:00:01 GMT"; 
} 

var today = new Date(); 
var zero_date = new Date(0,0,0); 
today.setTime(today.getTime() - zero_date.getTime()); 
var cookie_expire_date = new Date(today.getTime() + (8 * 7 * 86400000)); 

function setVisitorID() { 
   if (Get_Cookie('VisitorID')) { 
       var VisitorID = Get_Cookie('VisitorID'); 
   }else{ 
       Set_Cookie('VisitorID',Math.random(),cookie_expire_date); 
   } 
} 

function setSessionID() { 
   if (!Get_Cookie('SessionID')) 
       Set_Cookie('SessionID',Math.random()); 
} 

var loaded_script = true;