<script language=javascript>  //获得coolie 的值   function cookie(name){    var cookieArray=document.cookie.split("; "); //得到分割的cookie名值对        var cookie=new Object();        for (var i=0;i<cookieArray.length;i++){           var arr=cookieArray[i].split("=");       //将名和值分开           if(arr[0]==name)return unescape(arr[1]); //如果是指定的cookie，则返回它的值        }     return "";  }     function delCookie(name)//删除cookie {    document.cookie = name+"=;expires="+(new Date(0)).toGMTString(); }    function getCookie(objName){//获取指定名称的cookie的值     var arrStr = document.cookie.split("; ");     for(var i = 0;i < arrStr.length;i ++){         var temp = arrStr[i].split("=");         if(temp[0] == objName) return unescape(temp[1]);    }  }    function addCookie(objName,objValue,objHours){      //添加cookie     var str = objName + "=" + escape(objValue);     if(objHours > 0){                               //为时不设定过期时间，浏览器关闭时cookie自动消失         var date = new Date();         var ms = objHours*3600*1000;         date.setTime(date.getTime() + ms);         str += "; expires=" + date.toGMTString();    }    document.cookie = str; }   function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值 {     var Days = 30; //此 cookie 将被保存 30 天     var exp = new Date();    //new Date("December 31, 9998");     exp.setTime(exp.getTime() + Days*24*60*60*1000);     document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString(); } function getCookie(name)//取cookies函数      {     var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));      if(arr != null) return unescape(arr[2]); return null;  } function delCookie(name)//删除cookie {     var exp = new Date();     exp.setTime(exp.getTime() - 1);     var cval=getCookie(name);     if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString(); } </script>