function manage(nav)
{
	swap('termine', 0);
	swap('vorstand', 0);
	swap('koenigspaare', 0);
	swap('fotos', 0);
	swap('festschrift', 0);
	swap('geschichte', 0);
	swap('links', 0);
	swap('gaestebuch', 0);
	swap('impressum', 0);
	swap('spacer', 0);

	if(nav != '')
	{
		swap(nav,1);
	}
}

function swap(id, mode)
{
	if(document.getElementById && document.getElementById(id+"_sub"))
	{
		if(mode == 1) 
		{
	    		document.getElementById(id+"_sub").style.display = "block";	
		}
		else 
		{
			document.getElementById(id+"_sub").style.display = "none";
	    	}
	}
}

function fenster(breite, hoehe, inhalt, name)
{
	var positionX = ((screen.availWidth / 2) - breite / 2);
	var positionY = ((screen.availHeight / 2) - hoehe / 2);
	popup = window.open(inhalt,name,'toolbar=,location=,directories=,status=,menubar=,scrollbars=,resizable=,fullscreen=,width='+breite+',height='+hoehe+',top='+positionY+',left='+positionX);
	popup.resizeTo(breite,hoehe);
	popup.moveTo(positionX,positionY);
}