What is tab menu? Well, tab menu is a menu type that displays main menu items as tabs. The tab menu created by Sothink DHTML Menu is a standard compliant, 2 level tab menu. Sub menu items are displayed on a line below when you move your mouse over or clicking a main menu item. Now with Sothink DHTML Menu, you can create tab menus in minutes, just like Amazon’s menu tabs with their nice rounded corners!