menu = {}

menu.show = function (obj, option) {
	var menu = document.getElementById('menu_'+option);
	var menu_opts = document.getElementById('menumenu_options').getElementsByTagName('a');
	for (var i=0; i<menu_opts.length; i++) 
		menu_opts[i].className = '';
	obj.className = 'selected';
	
	var menus = document.getElementById('menus').getElementsByTagName('div');
	
	for(var i=0; i<menus.length; i++) {
		if(menus[i].id == menu.id) 
			menus[i].className = 'menu selected';
		else
			menus[i].className = 'menu';
	}
}