Hiya,
I've just tried it in IE6, and you're right it disappears on Search and other buttons that have Javascript for popups on them. I see your problem now sorry
I will do my best to fix that today for you, sorry I missed that
I would REALLY recommend you upgrade your web browser though. You could update to Internet Explorer 7, but I don't personally like it as I find the menu system unintuitive. I would recommend (with no hesitation) using Firefox though, it's excellent.
The problem with web browsers is they all interpret websites differently. Sadly Microsoft decided to try and be cool with Internet Explorer, and not correctly support the web standards that are set out by W3C (a bit like an internet governing body who help regulate it's advancement). That means poor schmucks like myself who have to make websites need to try to code them to work with all the browsers differently. If IE would just be more compliant it'd make my and millions of others lives a lot easier, and multi millions of users like yourself wouldn't bump into problems like this
Anyway I'll try to fix it for you, if you're interested you can download Firefox for free at
http://www.mozilla-europe.org/en/products/firefox/
And try it out. You can import all your favourites from IE to Firefox, I bet if you try using it for a couple weeks and get the hang of it you won't go back
I was a diehard IE fan but it swung me!
Cheers