function changeState(layerRef, state)
{
	document.all[layerRef].style.visibility = state;
}

function closeState()
{
	changeState('aboutmenu','hidden');
	changeState('ProSermenu','hidden');
	changeState('ABCmenu','hidden');
	changeState('HIPAAmenu','hidden');
	changeState('RegUpdatemenu','hidden');
	changeState('Pressmenu','hidden');
}