Normal0 = new Image();
  Normal0.src = "images/Boot_frei.gif";     /* erste Standard-Grafik */
  Highlight0 = new Image();
  Highlight0.src = "images/Boot_frei_over.gif"; /* erste Highlight-Grafik */

  Normal1 = new Image();
  Normal1.src = "images/MBG-Wappen_frei.gif";     /* zweite Standard-Grafik */
  Highlight1 = new Image();
  Highlight1.src = "images/MBG-Wappen_frei_over.gif"; /* zweite Highlight-Grafik */

  Normal2 = new Image();
  Normal2.src = "images/LKW_frei.gif";     /* dritte Standard-Grafik */
  Highlight2 = new Image();
  Highlight2.src = "images/LKW_frei_over.gif"; /* dritte Highlight-Grafik */

  Normal3 = new Image();
  Normal3.src = "Tasten/Taste1.gif";     /* dritte Standard-Grafik */
  Highlight3 = new Image();
  Highlight3.src = "Tasten/Taste_1.gif"; /* dritte Highlight-Grafik */

  Normal4 = new Image();
  Normal4.src = "Tasten/Taste2.gif";     /* dritte Standard-Grafik */
  Highlight4 = new Image();
  Highlight4.src = "Tasten/Taste_2.gif"; /* dritte Highlight-Grafik */

  function Bildwechsel(Bildnr,Bildobjekt) {
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