function tdOn2(id) {
	var e=id.parentNode.parentNode;
	e.className= "menubuttonON";
}

function tdOff2(id) {
	var e=id.parentNode.parentNode;
	e.className= "menubutton";
}

function swapClass(id,c) {id.className = c;}
function swapParentClass(id,c) {id.parentNode.className = c;}