// inits a tab bar for 5 tabs
self.tabBar = [[ScrollingTabBar alloc] initWithItemCount:5 delegate: nil];

// adds a tab item with a UIViewController
// label can be nil
[tabBar addTabBarItemWithLabel: @"Home" 
						normalIcon: @"Data/ico/TabBarItemHomeN.png" 
						activeIcon: @"Data/ico/TabBarItemHomeA.png"
					viewController: yourUIViewController
	 ];
	 
// adds a tab item with a selector and target and without a label
[tabBar addTabBarItemWithLabel: nil
						normalIcon: @"Data/ico/TabBarItemLangDE.png"
						  selector: @selector(yourSelector)
					selectorTarget: yourTarget
	 ];	 
	 
// disables/enables a tab item at the given index	 
[tabBar enableTab:NO atIndex:0];

// preselect a tab item
[tabBar selectTabAtIndex:0];

// changes the background tint 
tabBar.backgroundColor = [UIColor blackColor]