function menu(id){

	var objects = document.getElementById('menu').getElementsByTagName("ul");
	for(i=0;i<objects.length;i++) {
	objects[i].style.display="none";
	}
	
	var objects = document.getElementById('menu').getElementsByTagName("a");
	for(i=0;i<objects.length;i++) {
	objects[i].style.background="none";
	}
	
	var objects = id.getElementsByTagName("a");
	for(i=0;i<objects.length;i++) {
	objects[i].style.background="url(img/menua.gif)";
	}
	
	var objects = id.getElementsByTagName("ul");
	for(i=0;i<objects.length;i++) {
	objects[i].style.display="block";
		var objects2 = objects[i].getElementsByTagName("a");
		for(i1=0;i<objects2.length;i1++) {
		objects2[i1].style.background="none";
		}
	}
	
	
}