JavaScript to implement AD page timing shutdown

Javascript| Timing | advertising | Page Add the following code to the source code of the Web page, the window will automatically close after 20 seconds! This is not as good as jumping out of a small window with the use of it! The "i=20" in the code indicates that the shutdown time is 20 seconds and can be modified arbitrarily.

<script language= "JavaScript" >
<!--
function Clock () {i=i-1
document.title= "This window will be automatically closed after" +i+ "seconds!";
if (i>0) settimeout ("clock ();", 1000);
else Self.close ();}
var i=20
Clock ();
-->
</script>