Get URL Query String Parameters with Javascript

urlparams.js

var urlParams = (function () {
	var _params={},
	e,
	a = /\+/g,  // Regex for replacing addition symbol with a space
	r = /([^&=]+)=?([^&]*)/g,
	d = function (s) { return decodeURIComponent(s.replace(a, " ")); },
	q = window.location.search.substring(1);

	while (e = r.exec(q)) {
		_params[d(e[1])] = d(e[2]);
	}
	return _params
})();