JimEvans: Fixing JavaScript for detecting if element is in an overflow region. Also correcting logic in Element::GetLocationOnceScrolledIntoView() for same, because I'm an idiot.
JimEvans: Fixing JavaScript for detecting if element is in an overflow region. Also correcting logic in Element::GetLocationOnceScrolledIntoView() for same, because I'm an idiot.

r13794

krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate,krosenvold/selenium-git-release-candidate