text: 
  /**
   *  Full Screen plugin
   *  2014-08-22 by cyk
   **/
  (function () {
      var viewFullScreen = document.getElementById("view-fullscreen");
      if (viewFullScreen) {
          viewFullScreen.addEventListener("click", function () {
              var docElm = document.documentElement;
  			
  			// docElm = document.getElementById('topics');
  
  
              if (docElm.requestFullscreen) {
                  docElm.requestFullscreen();
              }
              else if (docElm.msRequestFullscreen) {
                  docElm.msRequestFullscreen();
              }
              else if (docElm.mozRequestFullScreen) {
                  docElm.mozRequestFullScreen();
              }
              else if (docElm.webkitRequestFullScreen) {
                  docElm.webkitRequestFullScreen();
              }
          }, false);
      }
  
      var cancelFullScreen = document.getElementById("cancel-fullscreen");
      if (cancelFullScreen) {
          cancelFullScreen.addEventListener("click", function () {
              if (document.exitFullscreen) {
                  document.exitFullscreen();
              }
              else if (document.msExitFullscreen) {
                  document.msExitFullscreen();
              }
              else if (document.mozCancelFullScreen) {
                  document.mozCancelFullScreen();
              }
              else if (document.webkitCancelFullScreen) {
                  document.webkitCancelFullScreen();
              }
          }, false);
      }
  
  
      var fullscreenState = document.getElementById("fullscreen-state");
      if (fullscreenState) {
          document.addEventListener("fullscreenchange", function () {
              fullscreenState.innerHTML = (document.fullscreenElement)? "" : "not ";
          }, false);
          
          document.addEventListener("msfullscreenchange", function () {
              fullscreenState.innerHTML = (document.msFullscreenElement)? "" : "not ";
          }, false);
          
          document.addEventListener("mozfullscreenchange", function () {
              fullscreenState.innerHTML = (document.mozFullScreen)? "" : "not ";
          }, false);
          
          document.addEventListener("webkitfullscreenchange", function () {
              fullscreenState.innerHTML = (document.webkitIsFullScreen)? "" : "not ";
          }, false);
      }
  
      var marioVideo = document.getElementById("mario-video")
          videoFullscreen = document.getElementById("video-fullscreen");
  
      if (marioVideo && videoFullscreen) {
          videoFullscreen.addEventListener("click", function (evt) {
              if (marioVideo.requestFullscreen) {
                  marioVideo.requestFullscreen();
              }
              else if (marioVideo.msRequestFullscreen) {
                  marioVideo.msRequestFullscreen();
              }
              else if (marioVideo.mozRequestFullScreen) {
                  marioVideo.mozRequestFullScreen();
              }
              else if (marioVideo.webkitRequestFullScreen) {
                  marioVideo.webkitRequestFullScreen();
                  /*
                      *Kept here for reference: keyboard support in full screen
                      * marioVideo.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
                  */
              }
          }, false);
      }
  })();
  
  
  