JavaScript DHTML/Event onMethod/onLayoutComplete
"onLayoutComplete" Example
<html><head>
<script language="JavaScript">
function function1() {
window.print();
}
</script>
</head>
<body>
<p>Some body content to print</p>
<input type="button"
value="Print"
onclick="function1()"
onlayoutcomplete="alert("The preview layout process is finished")">
</body>
</html>