Setek - 3:42 am on Sep 13, 2006 (gmt 0)

If it's fixed-width, fixed-height, this can be done quite easily.

You want it positioned over the top of everything else, so:

1. fix the width and the height of the div;
   
2. absolutely position;
   
3. set left and top to 50%;
   
4. set negative margin which is half the amount (e.g. if width = 600px, height = 300px, set margin-left = -300px, margin-top = -150px); and
   
5. set your z-index higher than your other elements, to position it above everything else.