/* Client-side access to querystring name=value pairs
	Version 1.2.3
	22 Jun 2005
	Adam Vandenberg
*/
function Querystring(qs) {
	this.params=new Object();
	this.get=Querystring_get;

	if(qs==null)
		qs=location.search.substring(1,location.search.length);

	if(qs.length==0)return;

	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_) {
	if(default_==null) default_=null;

	var value=this.params[key];
	if(value==null)value=default_;

	return value;
}