Exit Pop Up Script Issue

[ajaxprd]

Hi @Luke, I am trying to implement following exit pop up script on landing page. However, its JS dialogue box after Pressing OK, doesnt seem to proceed. JS alert box runs in loops. Can you please help here? I found this script in our forum. I am not that good in JS stuff.

<script>
window.exitMessage = "Do you really want to exit?";
window.redirectURL = "http://affiliate-Smartlink.com";
function exitStopper()
{
alert(window.exitMessage);
if( window.redirectURL )
{
window.location.href = window.redirectURL;
} }

window.addEventListener('blur', exitStopper );

document.body.addEventListener("mouseleave", function(e)
{
if( e.offsetY <= 0 )
{
exitStopper();
}
}, false);
</script>