var preloaded = [];
        // here is a lame preloading script i am putting in just for demonstration
        for (var i = 1; i <= 15; 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) };
                
                //menu4.onactivate = function() { swapImage("button4", preloaded[4][1].src) };
                //menu4.ondeactivate = function() { swapImage("button4", preloaded[4][0].src) };
                
                //menu5.onactivate = function() { swapImage("button5", preloaded[5][1].src) };
                //menu5.ondeactivate = function() { swapImage("button5", preloaded[5][0].src) };
                //menu6.onactivate = function() { swapImage("button6", preloaded[6][1].src) };
                //menu6.ondeactivate = function() { swapImage("button6", preloaded[6][0].src) };    
            
                //menu7.onactivate = function() { swapImage("button7", preloaded[7][1].src) };
                //menu7.ondeactivate = function() { swapImage("button7", preloaded[7][0].src) };
                
                //menu8.onactivate = function() { swapImage("button8", preloaded[8][1].src) };
                //menu8.ondeactivate = function() { swapImage("button8", preloaded[8][0].src) };
                
            
                                                                
            }
        }
        // this is a crappy example preloader. Use whichever one you want.
        function loadImage(sFilename) {
            var img = new Image();
            img.src ="images/" + sFilename;
            return img;
        }
        // this is a crappy example image swapper. Use whichever you want.
        function swapImage(imgName, sFilename) {
            document.images[imgName].src = sFilename;
        }