<!--       
function winopen(desturl,wname,w1,h1){
  var x0, y0;
  w='768'
  h='576'
  if (w1!='0') {w=w1}
  if (h1!='0') {h=h1}
  neuesfenster=open(desturl,wname,'status=no,menubar=0,toolbar=0,left=0,top=0,screenX='+x0+',screenY='+y0+',width='+w+',height='+h);
  if (navigator.appVersion.charAt(0)>=3) {
  x0=(screen.availWidth-w)/2;
  y0=(screen.availHeight-h)/2;
  neuesfenster.moveTo(x0,y0);
  neuesfenster.focus();
  }    
}
//-->