// queryString 
// Call function by x = queryString("variable") returns variable=x 
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; 
		} 
	} 
} 
queryString_Parse();