Scroll offset reset test case

In Chrome 5 and Safari 4 (and sometimes Firefox, although unable to reproduce in this test case), changing the visibility of the element by toggling display:none will cause the scroll offset to reset to zero. Toggling visibility:hidden does not seem to trigger the same problem.

Scroll the container and then toggle the classes applied.

Class applied:

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.