var preloaded = [];
for (var i = 1; i <= 7; i++) {
	preloaded[i] = [loadImage("menu0" + i + ".gif"), loadImage("menu0" + i + "_d.gif")];
}
function init(){
    if (mtDropDown.isSupported()){	
	    mtDropDown.initialize();

		menu1.onactivate    = function() { swapImage("menu1", preloaded[1][1].src) };
		menu1.ondeactivate  = function() { swapImage("menu1", preloaded[1][0].src) };

		menu2.onactivate    = function() { swapImage("menu2", preloaded[2][1].src) };
		menu2.ondeactivate  = function() { swapImage("menu2", preloaded[2][0].src) };

        menu3.onactivate    = function() { swapImage("menu3", preloaded[3][1].src) };
		menu3.ondeactivate  = function() { swapImage("menu3", preloaded[3][0].src) };

		menu4.onactivate    = function() { swapImage("menu4", preloaded[4][1].src) };
		menu4.ondeactivate  = function() { swapImage("menu4", preloaded[4][0].src) };

		menu5.onactivate    = function() { swapImage("menu5", preloaded[5][1].src) };
		menu5.ondeactivate  = function() { swapImage("menu5", preloaded[5][0].src) };

		menu6.onactivate    = function() { swapImage("menu6", preloaded[6][1].src) };
		menu6.ondeactivate  = function() { swapImage("menu6", preloaded[6][0].src) };

		menu7.onactivate    = function() { swapImage("menu7", preloaded[7][1].src) };
		menu7.ondeactivate  = function() { swapImage("menu7", preloaded[7][0].src) };

	}
}
function loadImage(sFilename){var img=new Image(); img.src="images/"+sFilename; return img;}
function swapImage(imgName, sFilename){ document.images[imgName].src = sFilename; }