//preLoad Images

  var I1 = new Image(); I1.src='img/menubutton1.gif';
  var I2 = new Image(); I2.src='img/menubutton2.gif';
  var I3 = new Image(); I3.src='img/menubutton3.gif';
  var I4 = new Image(); I4.src='img/menubutton4.gif';
  var I5 = new Image(); I5.src='img/menubutton5.gif';
  var I6 = new Image(); I6.src='img/menubutton6.gif';
  var I7 = new Image(); I7.src='img/menubutton7.gif';
  var I1_ = new Image(); I1_.src='img/menubutton1_.gif';
  var I2_ = new Image(); I2_.src='img/menubutton2_.gif';
  var I3_ = new Image(); I3_.src='img/menubutton3_.gif';
  var I4_ = new Image(); I4_.src='img/menubutton4_.gif';
  var I5_ = new Image(); I5_.src='img/menubutton5_.gif';
  var I6_ = new Image(); I6_.src='img/menubutton6_.gif';
  var I7_ = new Image(); I7_.src='img/menubutton7_.gif';

  var Ihl = new Image(); Ihl.src='img/Startseite.jpg';
  var a1 = new Image(); a1.src='img/animation1.gif';
  var a2 = new Image(); a2.src='img/animation2.gif';
  var a3 = new Image(); a3.src='img/animation3.gif';
  var a4 = new Image(); a4.src='img/animation4.gif';


  function switchImg(tdT, imgT, imG) {
    var tTD = document.getElementById(tdT);
	var tIMG = document.getElementById(imgT);
	if (tIMG != null) tIMG.src = imG;
  } // function
  
  function switchSpanToText() {
    var dImg = document.getElementById("whoiam");
	if (dImg != null) dImg.src='img/pietschtxt.jpg'	
  } // function
  
  function switchSpanToImg() {
    var dImg = document.getElementById("whoiam");
	if (dImg != null) dImg.src='img/pietschmann.jpg';
  } // function