function createPicInLeftPane() {
/* Array mit den Bildern Hochformat 170x558 */
  var pics = new Array("default.jpg",
                      "gaol.jpg",
                      "oak.jpg",
                      "opera.jpg",
                      "ship.jpg",
                      "traffic.jpg");
                      
  document.write('<img src="images/leftpic/' + pics[Math.floor(Math.random()*pics.length)] + '" alt="leftpic">');
}