function newWindow(url, myWidth, myHeight, myX, myY){
  myStr = "width="+myWidth+",height="+myHeight+",top="+myY+",left="+myX+",screenX="+myX+",screenY="+myY;
  MeinFenster = window.open(url, "Zweitfenster", myStr);
  MeinFenster.focus();
}