function getObject(elemID){
  var elem = null;
  if (document.all){
    elem = document.all(elemID);
  }else if (document.getElementById){
    elem = document.getElementById(elemID);
  }
  return elem;
}

function center(){
  var _text = getObject("cssWillkommenText3");
  var _cont = getObject("cssWillkommenText1");
  
  var _contHeight = parseInt(_cont.offsetHeight);
  var _textHeight = parseInt(_text.offsetHeight);
  _text.style.top = (_contHeight - _textHeight)/3;
}