Javascript check if Flash installed & enabled

has_flash.js

/**
 * Check if Flash is installed & enabled
 * http://stackoverflow.com/questions/998245/how-can-i-detect-if-flash-is-installed-and-if-not-display-a-hidden-div-that-inf
 *
 * @return {Boolean}
 */
var hasFlash = function() {
  var has_flash = false;

  try {
    var fo = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
    if (fo) {
      has_flash = true;
    }

  } catch (e) {
    if (navigator.mimeTypes
          && navigator.mimeTypes['application/x-shockwave-flash'] != undefined
          && navigator.mimeTypes['application/x-shockwave-flash'].enabledPlugin) {
      has_flash = true;
    }

  }

  return has_flash;
};