function toggleMenu(id){
	element = document.getElementById('submenuid'+id);
	element.className = (element.className.toLowerCase() == 'expanded'?'collapsed':'expanded');

	nodeflag = document.getElementById('submenuflagid'+id);
	nodeflag.className = (nodeflag.className.toLowerCase() == 'tree_node_collapsed'?'tree_node_expanded':'tree_node_collapsed');
}