Sometimes I need 4 columns, others times 3. Well I created a preloader the gets removed through the callback in the masonry.js

function triggerCallback() {
      callback.call( $this, $images ),
         $("div.masonry-loading").css({'display': 'none'});
         $("div.masonry-c").css({'visibility': 'visible'});
         $("div.masonry-four-c").css({'visibility': 'visible'});
      }

For some reason, it removes my preloader before the images are loaded when have two different instances of masonry loaded as so.

    $(document).ready(function(){
    var $container = $('.masonry-c');
    var min_width = 230;
    $('.masonry-c').hide();
    $container.imagesLoaded( function(){
      $('.masonry-c').fadeIn('fast');
        $container.masonry({
            itemSelector : '.masonry-box',
            isAnimated: true,
              columnWidth: function( containerWidth ) {
                var box_width = (((containerWidth)/3) | 0) ;

                if (box_width < min_width) {
                    box_width = (((containerWidth)/2) | 0);
                }

                $('.masonry-box').width(box_width);

                return box_width;

              }
        });
    });
}); 

       // Masonary1
    $(document).ready(function(){
    var $container1 = $('.masonry-four-c');
    var min_width = 200;
    $('.masonry-four-c').hide();
    $container1.imagesLoaded( function(){
      $('.masonry-four-c').fadeIn('fast');
        $container1.masonry({
            itemSelector : '.masonry-four-box',
            isAnimated: true,
              columnWidth: function( containerWidth ) {
                var box_width = (((containerWidth)/4) | 0) ;

                if (box_width < min_width) {
                    box_width = (((containerWidth)/3) | 0);
                }
                   if (box_width < min_width) {
                    box_width = (((containerWidth)/2) | 0);
                }

                $('.masonry-four-box').width(box_width);

                return box_width;

              }
        });
    });
});  

There must be a better way of doing things, thanks.