<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>