The example in this article describes the method of using JS CSS to realize Div pop-up window while darkening the background. Share it with everyone for your reference. The specific implementation method is as follows:
Div pop-up window implemented by JS CSS, while the background darkens
<script> <br />
function locking(){ <br />
Document.all.ly.style.display="block"; <br />
Document.all.ly.style.width=document.body.clientWidth; <br />
Document.all.ly.style.height=document.body.clientHeight; <br />
Document.all.Layer2.style.display='block'; <br />
} <br />
function Lock_CheckForm(theForm){ <br />
document.all.ly.style.display='none';document.all.Layer2.style.display='none';<br />
return false; <br />
} <br />
</script>