[jQuery] Horizontal animation works on F.F. IE7. Fails on IE6

[ab2qik]

Hi,

Horizontal animation of an element works on F.F. IE7. It fails to work
on IE6?

Example:
From: http://codesolv.net/se-update/library-slide.html

Click on any radio button under Form factors heading. An element
slides open.
This can be closed by the top right close button.

Works on F.F./IE7.

Any suggegstions for a fix for IE6?

Thankyou,
ab2qik