Iepngfix and positioned divs with inner-links

Ok, I've got some problems with the following IE bug

quote: "Due  to an IE bug, if you are putting links within an element with a transparent background, the element must not have a CSS relative/absolute position. Otherwise the links will likely be un-clickable. The script will warn you with a popup alert dialog if this occurs. There is an excellent article on PNG filters and links you might want to read if you are a CSS expert."

I've added a wrapper inside each positioned div and followed the [url=http://www.satzansatz.de/cssd/tmp/alphatransparency.html]instructions[/url]

However: suddenly, the filter doesn't seem to work anymore, depending if the page has content or not.

Concerning the page without content:

IE 6 looks good, except for the search-button: http://browsershots.org/screenshots/f788c4399f72a9152e69cddd07739562/
IE 5.5 looks as if the filter isn't applied at all: http://browsershots.org/screenshots/0ac696619ca25a93078c5235f1c7401a/

Concerning the page with content, the filter doesn't seem to be applied for both IE 5.5 (http://browsershots.org/screenshots/65431a68b2b0686fbda53c72d95b8f21/) and IE 6 (http://browsershots.org/screenshots/706d46427a453a85aa4c67fe2fa3cd9c/)

What  I did was:

- added  a wrapper
- moved the filter to the wrapper

The pages can be seen live here:

with content: http://www.martenminkema.nl/radio/
without content: http://www.martenminkema.nl/publicaties/

Did I do something wrong?