function galleryChangePage(anchor, container, listid) {
  var cont = $(container);
  var list = $(listid);
  var pagelinks = $('pagelinks');
  var anchor = $(anchor);
  if(pagelinks && anchor && cont && list) {
    var alllists = cont.getElementsBySelector('ul.imagelist');
    alllists.each(Element.hide);
    list.show();
    var pagelinks = pagelinks.getElementsBySelector('a');
    pagelinks.each(function(s) {
      s.removeClassName('selected');
    });
    anchor.addClassName('selected');
  }
}
function galleryChangePicture(picture, target, image) {
  var bigimage = $('bigimage');
  var bigimagelink = $('bigimagelink');
  var downloadimage = $('downloadimage');
  picture = $('image_' + picture);
  if(bigimage && bigimagelink && picture) {
    var src = picture.readAttribute('src');
    bigimage.src = image;
    bigimagelink.href = target;
    
    if(downloadimage) {
      downloadimage.href = target;
    }
  }
}