I have been merging my two websites and basically redoing a lot of the stuff. I have come across a funny little problem.

The top edge, bottom edge and the two side edges are frames. I have the frames set up to draw, and repeat, a tiny .GIF file in these borders. The .GIF is 16 x 1 pixels.

9 times out of 10 it works fine, but sometimes it "misses" one of the edges, (just draws a white rectangle). Usually only one edge is missing, and which, would seem to be random.

The corner pieces are also .GIF's but larger, 16 x 16. I've never seen these miss, and all the site contents draw fine, including some other small .GIF's used as vertical and horizontal dividers which are 24 x 1. I can make the edge .GIF's bigger of course, but I can't see why I should have to.

Any insights anyone? (IE 6, SP1 and other patches).