function preload()
  {
  var bild1=new Image();
  bild1.src="img/back1.gif";
  var bild2=new Image();
  bild2.src="img/nav_back2.gif";
  }
 //Die Fenster
function NewWindow(mypage, myname, h, w, wint, winl, scroll, menu) {
      winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+', menubar='+menu+',no-resizable';
      win = window.open(mypage, myname, winprops);
      if (parseInt(navigator.appVersion) >= 4) { win.window.focus();}
}