remove p tags on images

/*---------------------------------------------------------------------------------*/
/* Remove <p> tags on images in content area
/*---------------------------------------------------------------------------------*/

function tumble_filter_ptags_on_images($content){
    return preg_replace('/<p>\s*(<a .*>)?\s*(<img .* \/>)\s*(<\/a>)?\s*<\/p>/iU', '\1\2\3', $content);
}

add_filter('the_content', 'tumble_filter_ptags_on_images');