Masonry don't work

Hi WP friends,

I’m trying to get the Masonry JQuery plugin working, and I can’t figure out why it isn’t.

This is what I did:

1) wp_enqueue_script

add_action( 'wp_enqueue_scripts', 'jk_masonry' );
function jk_masonry() {
  wp_enqueue_script( 'jquery-masonry', array( 'jquery' ) );
}

2) Init the script

function my_masonry() { ?>
	<script type="text/javascript">
		jQuery(document).ready(function($){
            $('#home_content').masonry({
                itemSelector: '.widgetcontainer',
                columnWidth: 300,
            });
        });
    </script>
<?php
}
add_action('init', 'my_masonry');

3) Structured my HTML

<div id="home_content">
<div class="widgetcontainer widget_text">
<div class="widgetcontainer widget_text">
<div class="widgetcontainer widget_recent_entries">
<div class="widgetcontainer widget_rfb_widget">
</div>

4) Structured my CSS

#home_content {
	width: 900px;
	padding: 0;
	border: 0;
}

#home_content .widgetcontainer {
	width: 300px;
}

Using Firebug I can see that the plugin was initialized, the script is in the head and the HTML and CSS are ok… but nothing happens.

Why I am doing wrong???
Thanks!!!