var preloaded = [];

	// here is a lame preloading script i am putting in just for demonstration
	for (var i = 1; i <= 3; i++) {
		preloaded[i] = [loadImage(i + "-0.gif"), loadImage(i + "-1.gif")];
	}

	function init() {
		// whatever stuff you need to do onload goes here.

		//==========================================================================================
		// if supported, initialize mtdropdowns
		//==========================================================================================
		// Check isSupported() so that menus aren't accidentally sent to non-supporting browsers.
		// This is better than server-side checking because it will also catch browsers which would
		// normally support the menus but have javascript disabled.
		//
		// If supported, call initialize() and then hook whatever image rollover code you need to do
		// to the .onactivate and .ondeactivate events for each menu.
		//==========================================================================================
		if (mtDropDown.isSupported()) {
			mtDropDown.initialize();

			// hook all the image swapping of the main toolbar to menu activation/deactivation
			// instead of simple rollover to get the effect where the button stays hightlit until
			// the menu is closed.
				
			menu1.onactivate = function() { swapImage("button1", preloaded[1][1].src) };
			menu1.ondeactivate = function() { swapImage("button1", preloaded[1][0].src) };
				
			menu2.onactivate = function() { swapImage("button2", preloaded[2][1].src) };
			menu2.ondeactivate = function() { swapImage("button2", preloaded[2][0].src) };
				
			menu3.onactivate = function() { swapImage("button3", preloaded[3][1].src) };
			menu3.ondeactivate = function() { swapImage("button3", preloaded[3][0].src) };
				
		}
	}

	// this is a crappy example preloader. Use whichever one you want.
	function loadImage(sFilename) {
		var img = new Image();
		img.src ="images-e/" + sFilename;
		return img;
	}

	// this is a crappy example image swapper. Use whichever you want.
	function swapImage(imgName, sFilename) {
		document.images[imgName].src = sFilename;
	}