function detectFlash() {  
   if (navigator.plugins) {
       if (navigator.plugins["Shockwave Flash 2.0"]
        || navigator.plugins["Shockwave Flash"]) {

    
      var isVersion2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
      var flashDescription = navigator.plugins["Shockwave Flash" + isVersion2].description;

      //alert("Flash plugin description: " + flashDescription);
      
           var flashVersion = parseInt(flashDescription.substring(16));

      flash2Installed = flashVersion == 2;    
      flash3Installed = flashVersion == 3;
      flash4Installed = flashVersion == 4;
      flash5Installed = flashVersion == 5;
      flash6Installed = flashVersion == 6;
      flash7Installed = flashVersion == 7;
      flash8Installed = flashVersion == 8;
      flash9Installed = flashVersion >= 9;
    }
  }
  
  for (var i = 2; i <= maxVersion; i++) {  
    if (eval("flash" + i + "Installed") == true) actualVersion = i;
  }
  
   if(navigator.userAgent.indexOf("WebTV") != -1) actualVersion = 4;  
  

 //alert("version detected: " + actualVersion);


   if (actualVersion >= requiredVersion) {
       if (useRedirect) {
       if(jsVersion > 1.0) {
        window.location.replace(flashPage);  
      } else {
        window.location = flashPage;
      }
    }
    
        hasRightVersion = true;                
  } else {  
        if (useRedirect) {
           if(jsVersion > 1.0) {
        window.location.replace((actualVersion >= 2) ? upgradePage : noFlashPage);
      } else {
        window.location = (actualVersion >= 2) ? upgradePage : noFlashPage;
      }
    }
  }
}

detectFlash();