gistfile1.txt

/*--------------------------------------------------------------------------
  Background Fit The Screen Snippet (v0.28+)
/*------------------------------------------------------------------------*/

A.BackgroundFillSnippet = {
  autoLoad: function() {
    if (document.styleSheets[0].cssRules===undefined) return;
    var $s = jQuery('.full.slides:has(li)'); if (!$s) return;
    $s.addClass('cover').children().each(function(i){
      var $li = jQuery(this);
      var imgSrc = $li.children('img').css('opacity', 0).attr('src');
      $li.css({
        'background-image': 'url(' + imgSrc + ')',
        'background-position': 'center center',
        'background-size': 'cover'
      });
    });
  }
};