deo_4').attr('src', $('.video_4').attr('src'));
           });

         $('.video_list_4').click(function(){
              $('.video_1').attr('src', $('.video_1').attr('src'));
              $('.video_2').attr('src', $('.video_2').attr('src'));
              $('.video_3').attr('src', $('.video_3').attr('src'));
           });


          //sticky secondary nav
          var $navbar = $(".sub-nav-sticky"),
               y_pos = $navbar.offset().top,
               height = $navbar.height();

           $(w