code: function () {
                  var el = document.createElement( 'audio' ),
                      bool = false;
      
                  try {
                      if ( bool = !!el.canPlayType ) {
                          bool      = new Boolean(bool);
                          bool.ogg  = el.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/,'');
                          bool.mp3  = el.canPlayType('audio/mpeg;')               .replace(/^no$/,'');
      
                          // Mimetypes accepted:
                          //   developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements
                          //   bit.ly/iphoneoscodecs
                          bool.wav  = el.canPlayType('audio/wav; codecs="1"')     .replace(/^no$/,'');
                          bool.m4a  = ( el.canPlayType('audio/x-m4a;')            ||
                          el.canPlayType('audio/aac;'))             .replace(/^no$/,'');
                      }
                  } catch(e) {}
                  _audio = bool;
      
                  this.supportAudio = function () { return _audio; };
                  return this.supportAudio();
              }
docs: Audio 태그 지원여부
  @return	{Boolean}