Wrap WordPress Enbeds in a div

gistfile1.php

<?php
/**
 * Enclose embedded media in a div.
 *
 * Wrapping all flash embeds in a div allows for easier
 * styling with CSS media queries.
 *
 * @todo Document parameters.
 *
 * @access private
 * @since 1.0
 */
function _mfields_oembed_dataparse( $cache, $url, $attr = '', $post_ID = '' ) {
    return '<div class="embed">' . $cache . '</div>';
}
add_filter( 'embed_oembed_html', '_nighthawk_oembed_dataparse', 10, 4 );
add_filter( 'embed_googlevideo', '_nighthawk_oembed_dataparse', 10, 2 );
?>