function sACF1(login){
  if (login.benutzername.value == ""){login.benutzername.value = "";}
  document.getElementById("BnLabel").innerHTML="";
}
function sACF2(login){
  if (login.passwortfeld.value == ""){login.passwortfeld.value = "";}
  document.getElementById("PwLabel").innerHTML="";
}
function sACF3(login){
  if (login.benutzername.value == ""){document.getElementById("BnLabel").innerHTML="Benutzername";}
}
function sACF4(login){
  if (login.passwortfeld.value == ""){document.getElementById("PwLabel").innerHTML="Passwort";}
}

function FontSize(size) {
	document.getElementById("maincontent").style.fontSize = size + "px";
}