Why is this list not aligning itself when is displayed in IE7?

It is aligned in Chrome and Firefox but in IE7 it looks like this:

htt开发者_如何转开发p://ada.kiexpro.com/html/list.html

(I already fixed the z-index issue I just want to align the list vertically.)

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The changes that you have to make are as follows:

1. div#leftmanulist: make padding:55px 0 0
2. div#abouttop: make position:absolute
3. div#aboutlist: make top:0px

I think it should solve the problem.