Long back I have done a class in ASP for doimenu. Now I have made very little effort and did this in PHP.
The code is very simple and you can incorporate the menu easily in your php code.
I didn’t have time to do all the stuff this menu does. Its basic from which you can generate the menus on fly from your database or settings in php.
If anyone develope a better version please let me know… I will glad to use it 😀 .
Download php javascript menu