//
// Querystring() Function for JavaScript
//       written by Slava Gurgov
//
// Example - on Querystring: "?name=Mike&age=20"
//   Querystring("name") is "Mike"
//   Querystring("age") is "20"
//

function Querystring(name)
{
	var qs = (location.search).substring(1, (location.search).length);
	if(qs == "") 
		return null; //if no querystring

	var names = new Array(), values = new Array();
	var items = new Array(), temp = new Array();
	
	var items = qs.split("&"); //make an array of items
	var total = items.length; //total number of items

	for(var i=0; i < total; i++)
	{
		temp = items[i].split("="); //split each item
		names[i] = temp[0]; //collect names
		values[i] = temp[1]; // collect values
	}

	for(i=0; i < total; i++) //look for name in names[]
		if(names[i] == name)
			return values[i]; //if found, return corresponding item from values[]
	return null; //if not found
}