IE9 - links that do not work with the background, none or transparent

Question

I have no idea why, but in IE 9, when I have links on the page using absolute positioning, they don't seem to work or seem to sit behind everything else, but if you add a background color, it now works. I really know the answer to this question, but I am posting it here so that anyone who has this problem knows how to sort this.

Answer 1

Add

background: url(./this-not-a-hack.gif) repeat;