Query string in JS

gistfile1.js

var querystring = function () {
	var obj = {};
	var query = window.location.search.substring(1);
	if (query != "") {
		var vars = query.split("&"); 
		for (var i = 0; i < vars.length; i++) {
			var p = vars[i].split("=");
			obj[p[0]] = p[1];
		}
	}
	return obj;
}();