Turn a gallery into a colorbox gallery gracefully

/*
use this function on gallery_container or whatever the class name is of your gallery's surrounding element to turn a gallery whose link does not go directly to the image as expected by colorbox

this effectively creates a colorbox for any set of images with only slight modifications made to the function if required
*/

init_colorbox( );

function init_colorbox( ){
    $('.gallery_container img').unwrap('a');

    //replace the thumbnail indicator ('_t') + extension in an image with the file extension
    // so that the image that is displayed in colorbox is the large image and not the thumbnail
    //eg: foo_t.bar becomes foo.bar
    $('.gallery_container img').each(function( ){
        $(this).wrap('<a href="' + $(this).attr('src').replace(/_t\.(\w+)$/, '.$1') + '" rel="cb-gallery" />');
    });

    $(".gallery_container a[rel='cb-gallery']").colorbox({maxHeight: '100%'});
}