function GetRequest() {

	var url = location.search; //获取url中"?"符后的字串

	var theRequest = new Object();

	if (url.indexOf("?") != -1) {

		var str = url.substr(1);

		strs = str.split("&");

		for(var i = 0; i < strs.length; i ++) {

			theRequest[strs[i].split("=")[0]] = decodeURI(strs[i].split("=")[1]);

		}

	}

	return theRequest;

}

使用：

var Request = new Object();
Request = GetRequest();
var 变量名 = Request['要提取的URL中的变量名'];