d);
		if (!el) {
			el = document.createElement("span");
		}
		return el;
	}

	(function (w) {
		w.URLSearchParams = w.URLSearchParams || function (searchString) {
			var self = this;
			self.searchString = searchString;
			self.get = function (name) {
				var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(self.searchString);
				if (results == null) {
					return null;
				} else {
					return decodeURI(results[1]) || 0;
				}
			};
		};

	})(window);

	var urlParams = new U