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

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