When applying this position: fixed workaround the following circumstances trigger a very strange behaviour of IE6:

Applying onmouseover- and onmouseout-event-handler to html-tag in combination with changing the height of the div-block via javascript to a value higher than the window will trigger the bug.

After that, hovering over the "hover-able"-area that was defined before will cause the ie6-window to shrink little by little everytime the user hovers over the displayed "onmouseover"-tag.

Test page Workaround is not included
Reported by: Tobias Gassmann.

A scrollable element (overflow: auto) triggers a mouseout event on an overlaying layer, even when the mouse doesn't move outside the layer.

Test page Workaround is not included
Reported by: Stefan Jaeger.

When an element is positioned outside its parent element, Mozilla gives 0 as offsetWidth, Opera -1.
Mozilla also gives incorrect values, when some part of element is on the border of element. It gives back the size of "visible" area in parent element. So when half is in and half out, it gives half of the real width.

Test page Workaround is not included
Reported by: Mojmir Nebel.

Under certain conditions, the background image shown on a:hover remains when the mouse moves away.

Test page Workaround is included
Reported by: Ingo Chao.

Safari will omit the right padding of an element in a floated container if that element has trailing whitespace. Workaround is to ensure any elements with padding have no whitespace before the closing tag.

(ppknote: The test page is a mess in IE Mac, but the bug is not the same)

Test page Workaround is included
Reported by: Alan Harder.