[BUG #7273] fixed test
[BUG #7273] updated documentation
[BUG #7302] Removed container element
[BUG #7302] Adapted to use content element instead of container
[BUG #7302] Synchronize content element zIndex with property
[BUG #7302] Apply default attributes to flash element
[BUG #7302] Fixed HtmlArea
[BUG #7302] disable border-radius for input elements