Ajax Tooltip

I am trying to implement this Ajax Tooltip: http://www.javascriptkit.com/script/script2/ajaxtooltip.shtml

It works fine in IE, FF, and Safari. But on Opera it will now work. It shows a login screen for some reason. I can't figure it out. What could I have done wrong? Also, is it possible to have this tooltip work only when clicking on the link?

Here is the page on my site in question:

http://mangionemagic.com/forumbeta/topic.asp?TOPIC_ID=915

Hover over this icon to see the tooltip: http://mangionemagic.com/forumbeta/images/icon_linkto.gif

Any help fixing this in Opera would be most appreciated. Thank you.

There's no such problem for me. I see the same ajax effect In Opera, no login screen on mouseover!

I'm using Opera on a MacBook Pro. Perhaps it is a Mac/Opera issue?

Nevertheless, is there a solution? The problem still exists for me. :(