'popup' Example
<html>
<body>
<script language="JavaScript">
var popup = window.createPopup();
popup.document.body.innerHTML = 'This button will navigate to another site!';
popup.document.body.style.backgroundColor = 'yellow';
</script>
<input type="button"
onClick="location.href='http://www.java2s.com/';"
onmouseover="popup.show(100, 100, 200, 100, document.body);"
onmouseout="popup.hide();"
value="Navigate to another site">
</body>
</html>
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