function open_window()
 {

   var win1;
   var fenster1;
   var width1;
   var height1;
   var mov_win1X;
   var mov_win1Y;

   // Namen der Datei
   fenster1 = "login.php";


   // Breite und Hoehe der Fenster
   width1 = "250";
   height1 = "250";

   // Position auf dem Monitor
   mov_win1X = (screen.width + width1) / 2;
   if (screen.width < 900) {
   mov_win1Y = "175";
   }
   else {
   mov_win1Y = "250";
   }

   win1=window.open(""+fenster1+"","login","width="+width1+",height="+height1+",screenX="+mov_win1X+",screenY="+mov_win1Y+",resizable=no,locationbar=no,scrollbars=no,scrolling=no,menubar=no,status=no");
   win1.focus();

}

function zeigen (cssid) {
  document.getElementById("THIDE_"+cssid).style.display="inline";
  document.getElementById("TITEL_"+cssid).style.display="none";
  document.getElementById("TXT_"+cssid).style.display="inline";
  return 1; 
}

function verbergen (cssid) {
  document.getElementById("TITEL_"+cssid).style.display="inline";
  document.getElementById("THIDE_"+cssid).style.display="none";
  document.getElementById("TXT_"+cssid).style.display="none";
  return 1; 
}