jQuery.extend 
({ 
    'QueryString': window.location.search.length <= 1 ? new Array() : 
        function(a) 
        { 
            var b = new Array(); 
            for (var i = 0; i < a.length; ++i) 
            { 
                var p=a[i].split('='); 
                b[p[0]] = unescape(p[1]); 
            } 
            return b; 
       }(window.location.search.substr(1).split('&')) 
});