function toggleNav(myID) {
	tmpMenu = document.getElementById('subMenu' + myID);
	tmpImage = document.getElementById('img' + myID);
	if(tmpMenu.style.display == 'none') {
		tmpMenu.style.display = 'block';
		tmpImage.src="/website/common/images/arrowDown.gif";
	} else {
		tmpMenu.style.display = 'none';
	    tmpImage.src="/website/common/images/arrowRight.gif";
	}
}