//erste externe JavaScript-Datei
//----------------------------------------------------------
  document.getElementById("SS_FF").disabled = "true";
  document.getElementById("SS_IE").disabled = "true";
  document.getElementById("SS_OP").disabled = "true";

  Anzeige=navigator.appName;
    if (Anzeige == "Netscape") 
       {document.getElementById("SS_FF").disabled = !"true"}
    if (Anzeige == "Microsoft Internet Explorer")
       {document.getElementById("SS_IE").disabled = !"true"}
    if (Anzeige == "Opera")
       {document.getElementById("SS_OP").disabled = !"true"}
//----------------------------------------------------------