How do I get link URL (not file URL or attachment URL) of an attached image [duplicate]

Question

Possible Duplicate:
Retrieving a custom link on an attachment

I am using images on a Wordpress page to link to other pages in the site. I know how to get an attached image's file or attachment URL, but I can't figure out how to get its URL if it's linked to another page.

Take a look at here .The first image, "Women's clothes" links to a separate page in the site. I'm trying to make the caption of the attachment have the same link.

I know how I can use the filter below to alter the caption to wrap it in an anchor tag, but I don't know how actually retrieve the URL of the attachment if it links to a separate page. Anyone have any ideas?

//Change Caption output
function my_caption($output, $attr , $content) {
    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) . '" ';

    return '<div ' . $id . 'class="wp-caption ' . esc_attr($align) . '" style="width: ' . (10 + (int) $width) . 'px">'
    . do_shortcode( $content ) . '<a href="#"><p class="wp-caption-text">' . $caption . '</p></a></div>';return $output;
}
add_filter('img_caption_shortcode','my_caption' , 10 , 3 );

Answer 1

You could do it with jQuery fairly simply.

$("#caption").src($("img").src);

is psuedo code to get you thinking down the right track. Basically, loop through the images, grab the source, and apply it to the element that you want to gain the link.