JQuery
<script type=”text/javascript”>
$(function() {
$(window).unload(function() {
alert(‘Handler for .unload() called.’);
});
})
</script>
JavaScript
<script language=”javascript” type=”text/javascript”>
function doBeforeUnload() {
return “Leave the page before save?”;
}
</script>
<body onbeforeunload=”return popupBeforePageMove();”>