// copyright by Franc Wagner
//  BROWSER-ERKENNUNG Vers.1.2

var BrowserName='';
var BrowserVers=0;
var Version=0;
var docObj='';
var closeObj='';
var styleObj='';
var OP=0;

function checkBrowser()
{
   var BrowserName = navigator.appName;
   var Version  = parseInt(navigator.appVersion);

// alert(Version);
   if (Version < 4)  return 0;
   if (window.opera) OP=1;  // Opera
      else switch(BrowserName + Version)
         {
          case "Microsoft Internet Explorer4": BrowserVers=1; break;
          case "Netscape4": BrowserVers=2; break;
          case "Netscape5": BrowserVers=3; break;
         }
   if (document.getElementById) BrowserVers=3;  // IE >= 5 oder N >= 6
   return BrowserVers;
}

// OBJEKT-MODELL-ANPASSUNG

function checkDOM()
{
// alert ("Browser-Version: " + BrowserVers);
   switch (BrowserVers) 
         {
           case 0: alert('Für diesen Browser ist leider kein dynamisches HTML möglich'); break;
           case 1: docObj = 'document.all.';  styleObj ='.style'; break;
           case 2: docObj = 'document.layers.';  styleObj =  ''; break;
           case 3: docObj = 'document.getElementById("';  closeObj='")'; styleObj = '.style'; break;
          }

// alert(docObj +' ' + styleObj);
   return docObj + "!" + styleObj;
}