/*
*@desc Cookie工具,提供对Cookie的增、删、查
*@param expireDays 设置Cookie的有效时间单位为:天
* 如未指定则默认为30天
*/
var CookieUitl = function(expireDays)
{
    //根据参数设置Cookie有效时间，如未指定默认为30天
    if(expireDays)

<script>
function openpopup(){
window.open("http://www.xxx.com/","","width=300,height=300,scroolbars=no") //自己修改弹出窗口  
}  
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)