Paste this entire code in an HTML Snippet:
<html>
<head>
<title>
</title>
<script type="text/javascript" language="JavaScript">
// Centered Pop-Up Window (v1.0)
// (C) 2002
www.smileycat.com// Free for all users, but leave in this header
var win = null;
function newWindow(mypage,myname,w,h,features) {
var winl = (screen.width-w)/2;
var wint = (screen.height-h)/2;
if (winl < 0) winl = 0;
if (wint < 0) wint = 0;
var settings = 'height=' + h + ',';
settings += 'width=' + w + ',';
settings += 'top=' + wint + ',';
settings += 'left=' + winl + ',';
settings += features;
win = window.open(mypage,myname,settings);
win.window.focus();
}
</script>
</head>
<body>
<a href="#" onClick="newWindow('
http://www.java-scripts.net','','
750','
450','resizable,scrollbars,status,toolbar')">Click Here</a>
</body>
</html>
If this code doesn't work either you may want to search for "centered popup" in Google for more codes.
iWeb posts the video always in front of everything. To have behind something you would need to add the video with code and put the code in the page source code once published. Anyway that's not ideal.
Why don't you put the movie in iMovie and add a title for the entire length of the video? This way the text would in the video itself which is much better.
Cédric