Div positioning problem

[celebritymusic]

Hi guys

In an effort to have a div with a semi transparent background, I have made two divs - one with the transparency, and another to place over the top for my content.

I can't get my overlay div to position correctly - it seems that ie and FF start off placing the div from different positions.

The page is at www.popbeatblues.com.au/rw/artist_1.php

Also, making the overlay have an absolute position has chnaged the appearance of it's content divs too.

Any ideas what I'm doing wrong?

Cheers

Shaun