commandMenuItem and drop down menus

I have two related questions.

I am using ADF. I need to generate a drop down menu using commandMenuItem. I was unable to find an example on how to do this. Any insight? The menu that I am planning on creating using commandMenuItem will replace a menu that was created using javascript and strait html. The javascript code takes the gradient and creates a drop down menu + all the links, etc. Well, I am concerned on how i maintain the same look using commandMenuItem(by using the gradient) as I did with javascript+html. I did some research into CSS with ADF and came up blank on how I could do that? Many thanks.

Daniel