Sam, Thanks for your help. Now I have made the solpartmenu almost as what I want by setting the css class like as MainMenu_..., and I found that some attributes work and some doesn't, I don't know why it runs like this. But there is a other problem, when I click my mouse, the height of menu bar and menu item padding to left go back the properties before I made setting in Mainmenu_MenuBar, so I need control the properties for mouse click event, but they can not been found in solpartmenu's property list. How can I do with it? Again.many thanks.