newsletters_post_thumbnail_attr filter hook

<?php

/* Newsletter plugin => http://tribulant.com */

//$attr = apply_filters('newsletters_post_thumbnail_attr', array('style' => "margin-right:15px;", 'align' => "left", 'hspace' => "15", 'class' => "post_thumbnail"), $shortcode_post -> ID);

function my_attr($attr = null, $post_id = null) {
    $attr['style'] = false;
    $attr['hspace'] = false;
    $attr['align'] = false;
    return $attr;
}

add_filter('newsletters_post_thumbnail_attr', 'my_attr', 10, 2);

?>