PHP: Function e-mail share

gistfile1.txt

//email share function
 function direct_email($text="Send by email"){
        global $post;
        $title = htmlspecialchars($post->post_title);
        $excerpt = htmlspecialchars($post->the_excerpt);
        $subject = 'Article by '.htmlspecialchars(get_bloginfo('name')).': '.$title . $excerpt;
        $body = 'Check out this article from Justin W Hall: '.$title. "\n" . "\n"  .get_permalink($post->ID);
        $link = '<a rel="nofollow" href="mailto:?subject='.rawurlencode($subject).'&amp;body='.rawurlencode($body).'" title="'.$text.' : '.$title.'">'.$text.'</a>';
        return $link;
}