RTL issues

I have create a patch with some small modifications for better positioning of header elements in RTL.
The main thing I did is to strip out some unnecessary rules that made thing disappeared when in RTL mode.
This issues are visible in both IE, FF and probably other browsers too.
The only draw-back is that the primary menu links get a float:left witch means the first item is displayed last (on the left), but this is the only way I got IE7 to let the links align to the left and keep them with display:block witch is needed for the hover background effect.