function gotoVideo(e) {
    element = e.element();
    while (!Element.hasClassName(element, 'videosListItem')) {
        element = element.parentNode;
    }
    targetUrl = element.getAttribute("targetUrl");
    window.location.href = (targetUrl) ? targetUrl : element.targetUrl;
}
$$('.videosListItem').invoke('observe', 'click', gotoVideo);