Positioning a DIV

[Dudsmack]

I want to position a DIV in the center of the page and to the left a little bit. How can I keep it like this without using javascript to move the position everytime the window is resized?

[Fang]

<div style="text-align:center;"><div style="margin:0 auto;">
<div style="margin-left:-100px;">centered, a bit left</div>
</div></div>

The margin-left controls the "a bit left"