function menuopen(menuid){
	document.getElementById('menuitem'+menuid).className='mainmenuitem_hover';
	pSubmenu=document.getElementById('submenu'+menuid);
	pSubmenu.style.visibility = "visible";
	if (pSubmenu.filters && pSubmenu.filters.length)
		pSubmenu.filters[0].play();
}

function menuclose(menuid){
	document.getElementById('menuitem'+menuid).className='mainmenuitem';
	pSubmenu=document.getElementById('submenu'+menuid);
	pSubmenu.style.visibility = "hidden";
}