I have a menu with a sub-menu for some of the items. Right now when I mouse over an menu item with a sub-menu, the submenu shows up underneath the main menu item, thereby expanding that td in the table. This is annoying because it moves the other menu items below that one down. Is there a way that I can have my sub-menu items show up in a pop-up type of a box right next to the main menu item that they are a part of?