// ****ShowDiv Code Start*****
function ShowNo()  //隐藏两个层
        {
          //  document.getElementById("doing").style.display="none";
            document.getElementById("showdiv").style.display="none";
        }
function $(id)         
        {
            return (document.getElementById) ? document.getElementById(id) : document.all[id] ;
        }
function showFloat(txt,url)  //根据屏幕的大小显示两个层
        {
			var txt,url
            var range = getRange();
         //   $('doing').style.width = range.width + "px";
         //   $('doing').style.height = range.height + "px";
         //   $('doing').style.display = "block";
            document.getElementById("showdiv").style.display="";
        }
function getRange()  //得到屏幕的大小
        {
              var top     = document.body.scrollTop;
              var left    = document.body.scrollLeft;
              var height  = document.body.clientHeight;
              var width   = document.body.clientWidth;

              if (top==0 && left==0 && height==0 && width==0) 
              {
                top     = document.documentElement.scrollTop;
                left    = document.documentElement.scrollLeft;
                height  = document.documentElement.clientHeight;
                width   = document.documentElement.clientWidth;
              }
              return  {top:top  ,left:left ,height:height ,width:width } ;
        } 
//  ******ShowDiv Code End******