瀑布流图片自动式 masonry

<script type="text/javascript" src="<?php echo FRONT_PUBLIC;?>js/jquery-1.8.1.min.js"></script>
<script type="text/javascript" src="<?php echo FRONT_PUBLIC;?>js/jquery.masonry.min.js"></script>
<style>
    .container-fluid {
    padding: 20px;
    }
    .box {
    margin-bottom: 20px;
    float: left;
    width: 420px;
    }
    .box img {
    max-width: 100%
    }
</style>
<div id="masonry" class="container-fluid">
<?php foreach($fl_images as $image):?>
<?php if($image->fl_img):?>
<div class="box"><img src="<?php echo $image->fl_img;?>"></div>
<?php endif;?>
<?php endforeach;?> 
</div>

<script>
    $(function(){
    var $container = $('#masonry');
    $container.imagesLoaded( function(){
    $container.masonry({
    itemSelector : '.box',
    gutterWidth : 20,
    isAnimated: true,
    });
    });
    });
</script>