// JScript 文件
function Show(id){
        var obj=document.getElementById('c_'+id);
        if(obj.style.display=="none"){
                obj.style.display="";
    //将子菜单Id放入Cookies
    var curShow = readCookie('curShow');
    if(curShow!='')
    {
     var arr_curShow = curShow.split(',');
     var found = false;
     for(i=0;i<arr_curShow.length-1;i++)
     {
      if(arr_curShow[i].toString()==id) {found=true;}
     }
     if(!found){writeCookie('curShow',curShow+','+id,12)}
    }
    else {
     writeCookie('curShow',id,12)
    }
    //将子菜单Id放入Cookies End
        }else{
                obj.style.display="none";
    //将子菜单Id从Cookies中移除
    var curShow = readCookie('curShow');
    if(curShow!='')
    {
     var arr_curShow = curShow.split(',');
     for(i=0;i<arr_curShow.length;i++)
     {
      if(arr_curShow[i].toString()==id) {arr_curShow=arr_curShow.del(i--);}
     }
     curShow = arr_curShow.join(',');
     //alert(curShow);
     writeCookie('curShow',curShow,12)
    }
    //将子菜单Id从Cookies中移除 End
        }

}

function readCookie(name)

{

  var cookieValue = "";

  var search = name + "=";

  if(document.cookie.length > 0)

  { 

    offset = document.cookie.indexOf(search);

    if (offset != -1)

    { 

      offset += search.length;

      end = document.cookie.indexOf(";", offset);

      if (end == -1) end = document.cookie.length;

      cookieValue = unescape(document.cookie.substring(offset, end))

    }

  }

  return cookieValue;

}

function writeCookie(name, value, hours)

{

  var expire = "";

  if(hours != null)

  {

//    expire = new Date((new Date()).getTime() + hours * 3600000);

//    expire = "; expires=" + expire.toGMTString();

  }

  document.cookie = name + "=" + escape(value) + expire;

}
Array.prototype.del=function(n) {  //n表示第几项，从0开始算起。
//prototype为对象原型，注意这里为对象增加自定义方法的方法。
  if(n<0)  //如果n<0，则不进行任何操作。
    return this;
  else
    return this.slice(0,n).concat(this.slice(n+1,this.length));
}


window.onload = function a()
{
 var curShow = readCookie('curShow');
 var totalShow = 2; //自己修改一共有多少个二级分类
 if(curShow!=''&&curShow!=null)
 {
  for(i=1;i<=totalShow;i++)
  {
   document.getElementById('c_'+i).display="none";
  }
  var arr_curShow;
  arr_curShow = curShow.split(',');
  for(i=0;i<=arr_curShow.length-1;i++)
  {
   if(arr_curShow[i]!=''){document.getElementById('c_'+arr_curShow[i]).style.display="";}
  }

 }
}