function menu(this_id, id, eventtype) {
	if (id == current_site) {
		switch (eventtype) {
			case 'over':
				this_id.id = 'menu_markeret_over';
				break;
			case 'out':
				this_id.id = 'menu_markeret';
				break;
			case 'down':
				this_id.id = 'menu_markeret_over';
				break;
		}
	} else {
		switch (eventtype) {
			case 'over':
				this_id.id = 'menu_over';
				break;
			case 'out':
				this_id.id = id;
				break;
			case 'down':
				this_id.id = 'menu_markeret_over';
				break;
		}
	}
}