CSS z-index in xhtml and object
Alternative with PNG for comparison.
The text 'Maybe text for navigation menu.' should be displayed on top, because it is fixed
positioned an has the highest z-index in CSS. Try to scroll the page.
The correct behaviour is especially importent
for css-Layout with position: absolute and position: fixed. Else it will be possible, that the
menu of the project becomes inaccessible with a wrong overlapping object.