Some differences between IE en FF

[tijmen_4real]

Hi !

I got a banner on my forum index. It should look like this (and does in Mozilla FF):


But in IE7 and 8 it looks like this: (floating above)


It controlled with this code

And a similar problem is going on with the background image of the board.
Mozilla FF:


IE: (no image)


Controlled with the code in Main CSS, part BODY:

#ffffff url(http://www.deorvanheemskerk.nl/images/bg_body.gif)

How does this have to change in order to work correctly in both browsers?
Greetz,

Tijmen