Note:
Imagemenu by default use the same output style like core Drupal menu. Markers that you see left to menu items are background images. Use "background" style property to manage them (see imagemenu.css).
Added a modified version of patch from berniet - http://drupal.org/node/141220
Added active/ activemouseover images (if required)
Added item list output
Create a 'horizontal' view.
Disallow deletion of menu items which have children.
Implement an autocomplete for the menu path (perhaps?)
General polish up/ bug catch.