/* Basis Scripts */

function wopen(url, breite, hoehe){

  var winname = "wopen" + (new Date()).getTime();
  var winarg = "";
  var x = 0;
  var y = 0;
  windowisopen = false;
  eval("if(window." + winname + " && window." + winname + ".closed==false) { windowisopen = true\; }");

  if(!windowisopen) {
    if(screen.width > 640) { 
      x = (screen.availWidth  - breite) / 2;
      y = (screen.availHeight - hoehe) / 2; 
    }
    winarg  = 'width=' + breite + ',height=' + hoehe + ',top=' + y + ',left='+ x;
    winarg += ',resizable,menubar,scrollbars';
  }

  eval("" + winname + " = window.open( url, winname, winarg)\;");
  eval("" + winname + ".focus()\;");
  eval("if (" + winname + ".opener == null) " + winname + ".opener = self\;");

  return false;
}