关闭浏览器在打开浏览器内容回填（类似微博）

<script language="JavaScript" type="text/javascript">        var DispClose = true;    function CloseEvent(){        if (DispClose){            return "是否离开当前页面?";        }    }        function UnLoadEvent(){        DispClose = false;       //处理浏览器关闭前的动作，例如微博：在关闭页面前把输入框中还没有发布的信息进行保存在cookie中   var sd=document.getElementById("tt").value;document.cookie='userId='+sd+'';    }//页面加载的时候检查cookie的内容window.onload=function (){var cook=document.cookie;var cookarry=cook.split(";");for(var i=0;i<cookarry.length;i++){var arr=cookarry[i].split("="); if("userId"==arr[0]){document.getElementById("tt").value=arr[1];break;}}}</script>

<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 "";}//删除cookiefunction delCookie(name){   document.cookie = name+"=;expires="+(new Date(0)).toGMTString();}//获取指定名称的cookie的值function getCookie(objName){    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]);   }} //添加cookiefunction addCookie(objName,objValue,objHours){        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;}//两个参数，一个是cookie的名子，一个是值function SetCookie(name,value){    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();}//取cookies函数 function getCookie(name){    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));     if(arr != null) return unescape(arr[2]); return null;}//删除cookiefunction 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();}</script>