function winopen(a){
	newWindow=window.open(''+a,'','width=780,height=640,toolbar=1,location=1,directories=1,status=0,menuBar=1,scrollBars=1,resizable=1');
    	newWindow.focus();
	}

function sichtbar(elemen)
	{
	unsichtbar_alle();
	var x = document.getElementById(elemen);
	x.style.visibility="visible";
	if (navigator.appName.indexOf("Microsoft")!=-1)
		{
		x.style.top=80;
		}
		else
		{
		x.style.top=70;
		}
	}

function unsichtbar(elemen)
	{
	var x = document.getElementById(elemen);
	x.style.visibility="hidden";
	}

function unsichtbar_alle()
	{
	var y = document.getElementById('menueInfos');
	y.style.visibility="hidden";
	var y = document.getElementById('menueUnternehmen');
	y.style.visibility="hidden";
	}