Mega Code Archive
Press F1 to trigger the help event
<![CDATA[
<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
function yourhelp()
{
alert("Help!");
event.returnValue = false;
}
</script>
</head>
<body onHelp="yourhelp()">
</body>
</html>
]]>