function PageQuery(q)
{
	if(q.length > 1)
		this.q = q.substring(1, q.length);
	else
		this.q = null;
	this.keyValuePairs = new Array();
	if(q)
	{
		for(var i=0; i < this.q.split("&").length; i++)
		{
			this.keyValuePairs[i] = this.q.split("&")[i];
		}
	}

	this.getKeyValuePairs = function()
	{
		return this.keyValuePairs;
	}
	this.getValue = function(s) 
	{
		for(var j=0; j < this.keyValuePairs.length; j++)
		{
			if(this.keyValuePairs[j].split("=")[0] == s)
			return this.keyValuePairs[j].split("=")[1];
		}
		return false;
	}

	this.getParameters = function()
	{
		var a = new Array(this.getLength());
		for(var j=0; j < this.keyValuePairs.length; j++)
		{
			a[j] = this.keyValuePairs[j].split("=")[0];
		}
		return a;
	}
	this.getLength = function()
	{
		return this.keyValuePairs.length;
	}
}
function queryString(key)
{
	var page = new PageQuery(window.location.search);
	var value = page.getValue(key);
	if ( value != false )
		return unescape(value);
	return false;
}