function impressum (breite,hoehe)
{
	x=screen.availWidth/2-breite/2;
	y=screen.availHeight/2-hoehe/2;
	
	window.open ('impressum.html','','width='+breite+',height='+hoehe+',left='+x+',top='+y+',screenX='+x+',screenY='+y);
}

function anfahrt (breite,hoehe)
{
	x=screen.availWidth/2-breite/2;
	y=screen.availHeight/2-hoehe/2;
	
	window.open ('anfahrt.html','','width='+breite+',height='+hoehe+',left='+x+',top='+y+',screenX='+x+',screenY='+y);
}