简单锁屏代码

//锁屏代码
function Divlock()
 {

   var disdiv=document.getElementById('LockDiv');
   var mydiv=document.getElementById('ShowDiv');
   if(disdiv.style.display=="none")
   {
     disdiv.style.width=document.body.clientWidth;
     disdiv.style.height=document.body.clientHeight;
     disdiv.style.display='';
     mydiv.style.display='';
    //document.getElementById('bfbjk').src='bfbjk.html';
   }
   else 
   {
     disdiv.style.display="none";
     mydiv.style.display="none";
   }
}
------

页面引用

<div id="LockDiv" style="background:#333; z-index:1;display:none; position:absolute; left:0; top:0; FILTER:alpha(opacity=80);opacity: 0.8;">div>

        <div id="ShowDiv" style="display:none;">div>