function querystring(key)
{
	var value = null;
	for (var i=0;i<querystring.keys.length;i++)
	{
		if (querystring.keys[i]==key)
		{
			value = querystring.values[i];
			break;
		}
	}
	return value;
}
querystring.keys = new Array();
querystring.values = new Array();

function querystring_Parse()
{
	var query = window.location.search.substring(1);
	var pairs = query.split("&");

	for (var i=0;i<pairs.length;i++)
	{
		var pos = pairs[i].indexOf('=');
		if (pos >= 0)
		{
			var argname = pairs[i].substring(0,pos);
			var value = pairs[i].substring(pos+1);
			querystring.keys[querystring.keys.length] = argname;
			querystring.values[querystring.values.length] = value;
		}
	}
}
function decode(text) {
	text = unescape(text.replace(/\+/g,  " "));
	return text;
}
querystring_Parse();