Mif.Menu and Drag'n'Drop tree bug ...

Hello

I've implemented your Tree + Drag'n drop + Context menu.
What happens is that sometimes when you open the contextmenu and move the mouse above the menu items  drag'n drop is started  ...

Note that I'm on Mac + firefox 3. On mac I must open contextmenu using leftbutton + ctrl key and not using the right one.
Regards