function toggle_menu_old(menuDomId)
{
  new Effect.toggle(menuDomId, 'blind', {duration:0.6});
  $(menuDomId).toggleClassName('open');
}

var prevOpenMenuElem=null;
function toggle_menu(menuDomId)
{
	if(prevOpenMenuElem!=null && prevOpenMenuElem!=menuDomId){
		new Effect.BlindUp(prevOpenMenuElem, { duration: 0.3 });	
		$(menuDomId).className='subnav';	
	};
  //else if(!($(menuDomId).hasClassName('subactive'))){
//	else{
	$(menuDomId).className='subnav';
	new Effect.BlindDown(menuDomId, { duration: 0.6 });
	$(menuDomId).addClassName('subactive');
	prevOpenMenuElem=menuDomId;
	//};
}