document.onkeydown = getKeyCode;

function getKeyCode(event) {
	var oldFocus = focus;
	var newFocus;

	if(!event)
		event = window.event;

	switch (event.keyCode) {
		case 38:
			//Up Arrow
			if(focus > 0)
				focus--;
			break;
		case 40:
			//Down Arrow
			if(focus < 5)
				focus++;
			break;
		case 13:
			//Enter
			menuclick(focus);
			break;
	}
	newFocus = focus;
	if(oldFocus != newFocus) {
		outFocus("MenuId" + oldFocus);
		getFocus("MenuId" + newFocus);
		changeImage(focus);
		getMenuHelp(focus);
	}
}