I have centered my DNN web pages using {text-align: center;} in the Body element.  This works fine, but when the page content is longer than the viewport, a scrollbar is added on the right.  Then, when tabbing between a short page and a long page, the longer page appears to jump to the left, because it has been re-centered to accomodate the scrollbar.  (This is in IE7)  Without specifying a fixed width for the Body, is there any way to prevent this re-centering behavior?

No I don't think there is any way to fix that.  It makes sense though because the scroll bar is actually taking up space so the content of your page has less space. 

Unless I am wrong, I think you just have to deal with it.  It won't be in IE7 only.  You should see that in all the browsers.

Yes I have not come across a solution to that either and I think it occurs in all browsers.

Thanks,