var preloaded = [];

preloaded[1]=[loadImage("/images/menu/btn-home.gif"), loadImage("/images/menu/btn-home-over.gif")];
preloaded[2]=[loadImage("/images/menu/btn-catalog.gif"), loadImage("/images/menu/btn-catalog-over.gif")];
preloaded[3]=[loadImage("/images/menu/btn-stores.gif"), loadImage("/images/menu/btn-stores-over.gif"), loadImage("/images/menu/btn-stores-sel.gif")];
preloaded[4]=[loadImage("/images/menu/btn-join.gif"), loadImage("/images/menu/btn-join-over.gif")];
preloaded[5]=[loadImage("/images/menu/btn-about.gif"), loadImage("/images/menu/btn-about-over.gif")];
preloaded[6]=[loadImage("/images/menu/btn-news.gif"), loadImage("/images/menu/btn-news-over.gif")];
//preloaded[7]=[loadImage("/images/menu/btn-askus.gif"), loadImage("/images/menu/btn-askus-over.gif")];

function init() {
    if (mtDropDown.isSupported()) {
        mtDropDown.initialize();
        
        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); if (wch_hack) WCH.Apply("mtDropDown1"); };
        menu2.ondeactivate = function() { swapImage("button2", preloaded[2][0].src); if (wch_hack) WCH.Discard("mtDropDown1"); };
        
        menu3.onactivate = function() { swapImage("button3", preloaded[3][1].src) };
        menu3.ondeactivate = function() { swapImage("button3", preloaded[3][2].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) };
    }
}

// preloader
function loadImage(sFilename) {
	var img = new Image();
	img.src =sFilename;
	return img;
}

// swapper
function swapImage(imgName, sFilename) {
	document.images[imgName].src = sFilename;
}