function gotopage(thePage){
	document.location.href = thePage;
}

function showMenu(themenu){
	var el = document.getElementById(themenu);
	
	if (el){
		el.style.visibility = 'visible';
	}
}

function hideMenu(themenu){
	var el = document.getElementById(themenu);
	
	if (el){
		el.style.visibility = 'hidden';
	}
}