var preloaded = [];

                // here is a lame preloading script i am putting in just for demonstration
                for (var i = 1; i <= 9; 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 dropdowns
                        //==========================================================================================
                        // 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 (DropDown.isSupported()) {
                                DropDown.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.
                        }
                }

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

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