code: function get_flash_version() {
      // ie
      try {
          try {
              // avoid fp6 minor version lookup issues
              // see: http://blog.deconcept.com/2006/01/11/getvariable-setvariable-crash-internet-explorer-flash-6/
              var axo = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');
              try {
                  axo.AllowScriptAccess = 'always';
              } catch (e) {
                  return '6,0,0';
              }
          } catch (e) {}
          return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version').replace(/\D+/g, ',').match(/^,?(.+),?$/)[1];
          // other browsers
      } catch (e) {
          try {
              if (navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) {
                  return (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]).description.replace(/\D+/g, ",").match(/^,?(.+),?$/)[1];
              }
          } catch (e) {}
      }
      return '0,0,0';
  }
docs: 参考http://www.prodevtips.com/2008/11/20/detecting-flash-player-version-with-javascript/