text: $(document).ready(function(){
  
  
      // display none if i will not use audio data
      var attr = $('.audio audio').attr('src')
      if (attr == '') {
        $(".audio").css("display","none")
      }
  
   // display none if i will not use audio youtube embed
      var attr = $('.audio-embed iframe').attr('src')
          if (attr == 'https://www.youtube.com/embed/') {
            $('.audio-embed').css('display', 'none')
          }
  // display none if i will not use video youtube embed
      var attr = $('.video-embed iframe').attr('src')
              if (attr == 'https://www.youtube.com/embed/') {
              $('.video-embed').css('display', 'none')
              }
    // dropdown download for all pdf links
    $(".download .click-download").click(function(){
      $(".download .click-download li").toggle();
    });
  
  
  
  
    
    
  });
  
  
   
  