var domain="";    //.ferrygame.com 
//设置Cookie
function addCookie(name,value)
{
  //清除旧值

  if(getCookie(name))  delCookie(name);    
  //不设置过期时间,默认浏览器关闭就失效了

  var cookieString=name+"="+escape(value)+ "; path=/"; 
  if(domain!="")
     cookieString += "domain=" + domain;
  document.cookie=cookieString; 
} 

//获取Cookie
function getCookie(name)
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
     if(arr != null) return unescape(arr[2]); return null;

}
//删除cookie
function delCookie(name)
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
//获取URL参数值

function getUrlParam(name)
{
   if(name != null)
   {
      var   reg   =   new   RegExp("(^|&)"+   name   +"=([^&]*)(&|$)");   
      var   r   =   window.location.search.substr(1).match(reg);   
      if   (r!=null)   return   unescape(r[2]);   return   null;   
   }
}
//保存advIndex参数值

function SaveAdvIndex()
{ 
  var advIndex = getUrlParam("advIndex");
  if(advIndex == null || advIndex == "")
  {
      return;  
  }
  else
  {
      addCookie("advIndex",advIndex,1);
  }  
}

//判断advIndex参数值是否保存在客户端Cookie中

function isHaveAdvIndex()
{
    var advIndex = getCookie("advIndex");
    if(advIndex == null || advIndex == "")
    {
        return false;
    }
    else
    {
        return true;
    }
}

//保存地址中的参数到Cookie
SaveAdvIndex();

//alert(getCookie("advIndex"));