sample sales: I've been searching for a way to accomplish a simple vertical menu design that enables the user to click on a link and have a sub-menu appear below it, sliding the other options down below it. Then I want the menu to retract when clicked again. I know this can be done with javascript, but I'd like to avoid using it due to compatibility issues. I was hoping to accomplish it with php and css if possible. Any ideas?|||The sliding effect would require Javascript or Flash.