[CSS3] Proposal: 'scrollbar-position'

To enhance accessibility, CSS3 should have a 'scrollbar-position' property whose values could be 'top','left','right','bottom'.

I bring this up because myself being left-handed, I sometimes use my left hand for controlling the mouse. It becomes somewhat akward when the scrollbar is on the right side. 
body {
scrollbar-position: left;
}
All elements in the body with scrollbars (textareas, elements with overflow: scroll) would also have their scrollbars on the left. The top and bottom values would only apply to horizontal scrollbars. 

Thank you
Dante Evans