caption

add_shortcode('wp_caption', 'slim_img_caption_shortcode');
add_shortcode('caption', 'slim_img_caption_shortcode');
function slim_img_caption_shortcode($attr, $content = null) {
 // Allow plugins/themes to override the default caption template.
 $output = apply_filters('img_caption_shortcode', '', $attr, $content);
 if ( $output != '' )
 return $output;

 extract(shortcode_atts(array(
 'id'    => '',
 'align'    => 'alignnone',
 'width'    => '',
 'caption' => ''
 ), $attr));

 if ( 1 > (int) $width || empty($caption) )
 return $content;

 if ( $id ) $id = 'id="' . esc_attr($id) . '" ';

 $frame_width = 0; // frame width in pixels per side //

 return '<div ' . $id . 'class="wp-caption ' . esc_attr($align) . '" style="width: ' . ( 2 * $framewidth + (int) $width) . 'px">'
 . do_shortcode( $content ) . <p class="wp-caption-text"> . $caption . '</p></div>';
}