//添加到收藏夹方法
function addSaveBook(){
  window.external.addFavorite("http:\//www.021train.com","上海培训网——www.021train.com");
}

//添加一个cookie
function addCookie(name,value,expireHours){
  var cookieString = name + "=" + escape(value);
  if(expireHours>0){
    var date=new Date();    
    date.setTime(date.getTime()+expireHours*3600*1000); // 转换为毫秒

    cookieString = cookieString + ";expires=" + date.toGMTString() + ";path=/;domain=.021train.com";
  }
  document.cookie=cookieString;
}

//获取一个cookie
function getCookie(name){
  var strCookie=document.cookie;
  var arrCookie=strCookie.split(";"); // 将多cookie切割为多个名/值对
  for(var i=0;i<arrCookie.length;i++){ // 遍历cookie数组，处理每个cookie对

    var arr=arrCookie[i].split("="); // 找到名称为userId的cookie，并返回它的值

    if(arr[0].replace(" ","")==name) return arr[1];
  }
  return "";
}

//删除一个cookie
function deleteCookie(name){
  var date=new Date();
  date.setTime(date.getTime()-10000); // 删除一个cookie，就是将其过期时间设定为一个过去的时间
  document.cookie = name + "=v;expires=" + date.toGMTString() + ";path=/;domain=.021train.com";
}

//打开新页面时增加cookie计数器

function load_SB(){
  if(getCookie("JMW_SaveBooks") != "") return;
  if(getCookie("DesktopCounts") == ""){
    addCookie("DesktopCounts",1,720);
  }
  else{
    var currentCount = parseInt(getCookie("DesktopCounts")) + 1;
    deleteCookie("DesktopCounts");
    addCookie("DesktopCounts",currentCount,720);
  }
}

if((navigator.userAgent.indexOf('MSIE')>=0)&&(navigator.userAgent.indexOf('Opera')<0)){
  //关闭页面时减少cookie计数器

  window.onbeforeunload = function(){
    if(getCookie("JMW_SaveBooks") != "") return;//已经收藏，退出操作

    var x = document.documentElement.clientWidth==0?document.body.clientWidth:document.documentElement.clientWidth;
    var y = document.documentElement.clientHeight==0?document.body.clientHeight:document.documentElement.clientHeight;
    var currentCount = parseInt(getCookie("DesktopCounts")) - 1;//使下一次的加载时，数值恢复逻辑上的正常
    deleteCookie("DesktopCounts");
    addCookie("DesktopCounts",currentCount,720);
    if(event.clientX>x&&event.clientY<0||event.clientY>y||event.altKey){//关闭
      if(currentCount <= 0){
        if(confirm("[友情提示]是否将上海培训网www.021train.com添加到收藏夹？")) addSaveBook();
        deleteCookie("JMW_SaveBooks");
        addCookie("JMW_SaveBooks","true",720);//一个月后过期

      }
    }
  }
  load_SB();
}