wp_enqueue_script( array("jquery", "jquery-ui-core", "interface", "jquery-ui-sortable", "wp-lists", "jquery-ui-sortable") );

// Drag and drop attachments
add_action('admin_head', 'dragndrop');

function dragndrop() { ?>
	<script type="text/javascript">
	//<![CDATA[
		jQuery(document).ready(function() {
    		jQuery('#attachmentcontainer').sortable();
  		});
	//]]>
	</script>
	<?php
}