javascript wont work

[marshy28]

javascript wont work
Can anybody tell me why this simple piece of javascript wont work its doing my head in it just says the url in wrong or missing.....Thanks Marshy

Its on http://www.barrys-drivingschool.fsn...uk/contents.htm

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
var url="http://www.barrys-drivingschool.co.uk";
var title="Barrys School of Motoring";
document.write('<A HREF="java script:window.ext');
document.write('ernal.AddFavorite(url,title);" ');
document.write('onMouseOver=" window.status=');
document.write("'Add our site to your favorites!'; return true ");
document.write('"onMouseOut=" window.status=');
document.write("' '; return true ");
document.write('"> Addto Favorites</a>');
}
else {
var msg = "Bookmark us";
if(navigator.appName == "Netscape") msg += " press (CTRL-D) now!";
document.write(msg);
}

// End -->
</script>

[khaki]

FYI

This post is also in the Javascript forum, so any responses should probably go to that forum.