读取url后参数方法

globalsubmitForm.getUrlQueryString = function (name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
var r = window.location.search.substr(1).match(reg);
if (r != null)
{
return unescape(r[2]);
}
return null;
}