Get Query String

gistfile1.js

/*
 *	Example URL: http://example.com/?city=portland&state=oregon&country=usa
 *	Example Usage: alert( getQueryString('city') ); will return portland
 */
function getQueryString(obj) { 
	var string = window.location.search.substring(1); 
	var strings = string.split('&'); 
	for (var i=0; i < strings.length; i++) { 
		var set = strings[i].split('='); 
		if (set[0] == obj) { 
			return set[1];
		} 
	} 
}