image_lazy_loading.js

  $('.lazy_loading').each(function() { 
    
    if( !this.complete ){
      var image = $(this);
      var image_original_src = $(this).attr('src');
    
      image.attr({src: '/images/item_image_loading.gif'});
    
      (function() { // New scope hack
        var _image = image;
        $(new Image())
          .load( function(){
            $(this).hide();
            _image.attr({src: $(this).attr('src')});
          })
          .attr({src: image_original_src});
      })(); // Execute immediately
    }
    
  });