How to use "Layout"?

').addClass('video-wrapper'); videoWrap.append(iframe); video.append(videoWrap); youtubeWrap.append(video); youtube.append(youtubeWrap); $('body').append(youtube); } youtube.css('display', 'table'); return false; }); var blocks = []; elem.find('.blocks .block-loadable').each(function() { var block = { _loadYoutubeIframes: function() { this.elem.find('.video-wrapper > iframe').each(function() { var iframe = $(this); iframe.attr('src', iframe.attr('data-src')); }); }, elem: $(this), loaded: false, load: function() { if (this.loaded) return; var thisSelf = this; this.loaded = true; this.elem.addClass('loaded'); this.elem.trigger('block:loaded'); setTimeout(function() { thisSelf._loadYoutubeIframes(); }, 500); } }; $(this).data('__BLOCK__', block); blocks.push(block); }); for (var i=0, block; block = blocks[i]; i++) { block.load(); } if (isInstanceBlockLoad) { for (var i in blocks) { (function(block) { block.load(); })(blocks[i]); } } else { var scrollHandler = function(initial) { for (var i in blocks) { (function(block) { if (block.loaded) return; setTimeout(function() { if ($(window).height() + $(window).scrollTop() > block.elem.offset().top + (initial ? 100 : 0)) { block.load(); } }, 300); })(blocks[i]); } }; $(window).on('scroll', function() { scrollHandler(); }); scrollHandler(true); } $('.block-title-tooltip').tooltip({placement: 'top'}); });