// Next comes the standard javascript detection that uses the 

// navigator.plugins array. We pack the detector into a function so that 

// it preloads before being run.



function detectFlash() {  

  // If navigator.plugins exists...

  if (navigator.plugins) {

    // ...then check for flash 2 or flash 3+.

    if (navigator.plugins["Shockwave Flash 2.0"]

        || navigator.plugins["Shockwave Flash"]) {



      // Some version of Flash was found. Time to figure out which.

      

      // Set convenient references to flash 2 and the plugin description.

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

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



      // DEBUGGING: uncomment next line to see the actual description.

      // alert("Flash plugin description: " + flashDescription);

      

      // A flash plugin-description looks like this: Shockwave Flash 4.0 r5

      // We can get the major version by grabbing the character before the period

      // note that we don't bother with minor version detection. 

      // Do that in your movie with $version or getVersion().

      var flashVersion = parseInt(flashDescription.substring(16));



      // We found the version, now set appropriate version flags. Make sure

      // to use >= on the highest version so we don't prevent future version

      // users from entering the site.

      flash2Installed = flashVersion == 2;    

      flash3Installed = flashVersion == 3;

      flash4Installed = flashVersion == 4;

      flash5Installed = flashVersion == 5;

      flash6Installed = flashVersion == 6;

      flash7Installed = flashVersion == 7;

      flash8Installed = flashVersion == 8;

      flash9Installed = flashVersion >= 9;

    }

  }

  

  // Loop through all versions we're checking, and

  // set actualVersion to highest detected version.

  for (var i = 2; i <= maxVersion; i++) {  

    if (eval("flash" + i + "Installed") == true) actualVersion = i;

  }

  

  // If we're on msntv (formerly webtv), the version supported is 4 (as of

  // January 1, 2004). Note that we don't bother sniffing varieties

  // of msntv. You could if you were sadistic...

  if(navigator.userAgent.indexOf("WebTV") != -1) actualVersion = 4;  

  

  // DEBUGGING: uncomment next line to display flash version

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





  // We're finished getting the version on all browsers that support detection.

  // Time to take the appropriate action.



  // If the user has a new enough version...

  if (actualVersion >= requiredVersion) {

    // ...then we'll redirect them to the flash page, unless we've

    // been told not to redirect.

    if (useRedirect) {

      // Need javascript1.1 to do location.replace

      if(jsVersion > 1.0) {

        // It's safe to use replace(). Good...we won't break the back button.

        window.location.replace(flashPage);  

      } else {

        // JavaScript version is too old, so use .location to load

        // the flash page.

        window.location = flashPage;

      }

    }

    

    // If we got here, we didn't redirect. So we make a note that we should

    // write out the object/embed tags later.

    hasRightVersion = true;                

  } else {  

    // The user doesn't have a new enough version.

    // If the redirection option is on, load the appropriate alternate page.

    if (useRedirect) {

      // Do the same .replace() call only if js1.1+ is available.

      if(jsVersion > 1.0) {

        window.location.replace((actualVersion >= 2) ? upgradePage : noFlashPage);

      } else {

        window.location = (actualVersion >= 2) ? upgradePage : noFlashPage;

      }

    }

  }

}



detectFlash();  // call our detector now that it's safely loaded.