var timeout		= 500; // Autoclose nach dem verlassen mit der Maus
var closetimer		= 0; // Closetimer-Handle
var submenu		= 0; // aktives Submenü
var navbar		= 0; // Navigationsleiste
var navbarCSS		= 'Navigation';
var navbarZIndex	= 3;

// Submenü anzeigen
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(submenu) submenu.style.visibility = 'hidden';

	// get new layer and show it
	submenu = document.getElementById(id);
	if (submenu != null)
		submenu.style.visibility = 'visible';
	navbar = document.getElementById(navbarCSS);
	navbar.style.zIndex = navbarZIndex;
}

// close showed layer
function mclose()
{
	if(submenu) submenu.style.visibility = 'hidden';
	navbar = document.getElementById(navbarCSS);
	navbar.style.zIndex = 0;
}

// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;