url parameters - javascript

urlParams.js

var urlParams = {};
(function () {
    var e,
        r = /([^&=]+)=?([^&]*)/g,
        d = function (s) { return decodeURIComponent(unescape(s)); },
        q = window.location.search.substring(1);
    while (e = r.exec(q))
       urlParams[d(e[1])] = d(e[2]);
})();