var preloaded = [];

		// here is a lame preloading script i am putting in just for demonstration
		for (var i = 1; i <= 40//total Buttons.
			 ; 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.
					
				
				menu20.onactivate = function() { swapImage("button20", preloaded[20][1].src) };
				menu20.ondeactivate = function() { swapImage("button20", preloaded[20][0].src) };
				
				menu21.onactivate = function() { swapImage("button21", preloaded[21][1].src) };
				menu21.ondeactivate = function() { swapImage("button21", preloaded[21][0].src) };
											
				menu22.onactivate = function() { swapImage("button22", preloaded[22][1].src) };
				menu22.ondeactivate = function() { swapImage("button22", preloaded[22][0].src) };
				
				menu23.onactivate = function() { swapImage("button23", preloaded[23][1].src) };
				menu23.ondeactivate = function() { swapImage("button23", preloaded[23][0].src) };
				
				menu24.onactivate = function() { swapImage("button24", preloaded[24][1].src) };
				menu24.ondeactivate = function() { swapImage("button24", preloaded[24][0].src) };
				
				menu25.onactivate = function() { swapImage("button25", preloaded[25][1].src) };
				menu25.ondeactivate = function() { swapImage("button25", preloaded[25][0].src) };
				
				menu26.onactivate = function() { swapImage("button26", preloaded[26][1].src) };
				menu26.ondeactivate = function() { swapImage("button26", preloaded[26][0].src) };
				
				menu27.onactivate = function() { swapImage("button27", preloaded[27][1].src) };
				menu27.ondeactivate = function() { swapImage("button27", preloaded[27][0].src) };
				
				menu28.onactivate = function() { swapImage("button28", preloaded[28][1].src) };
				menu28.ondeactivate = function() { swapImage("button28", preloaded[28][0].src) };
				
				menu29.onactivate = function() { swapImage("button29", preloaded[29][1].src) };
				menu29.ondeactivate = function() { swapImage("button29", preloaded[29][0].src) };
		
			
			}
		}

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

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