function showPreview(popupManager, url)
//==========================================================
{
  flowplayer('elementPreviewPlayer', "player/flowplayer-3.1.1.swf", { 

      clip: {
        url: url,
        autoPlay: true,
        autoBuffering: true,
        scaling: 'fit'
      },
      plugins: { 
        audio: { 
            url: 'player/flowplayer.audio-3.1.0.swf' 
        }
      },
      onBegin: function () { 
        // disable replay button for this playlist item 
        this.getPlugin("play").css({opacity: 0}); 
      }
  });
  popupManager.showModal();
}

function hideElementPreview() {
  $f('elementPreviewPlayer').stop();
  modalElementPreviewManager.hideModal();
}