sig_gallery_counter = 0;

function sig_rel_append() {
  string_sig_gallery_counter = '-' + ((sig_gallery_counter < 10) ? '0' : '') + sig_gallery_counter.toString();
  jQuery('a.thickbox').each(function() {
    if(this.rel.match(/^gallery[0-9]{2}$/)) {
      jQuery(this).attr('rel', this.rel + string_sig_gallery_counter);
    }
  });
  sig_gallery_counter++;
}