function lightboxSlide(anchorId, captionId, contextPath, zoomPageUrl, slideImgUrl, captionHtml, imageAlt) {
    var anchorElement = document.getElementById(anchorId);
    anchorElement.setAttribute('href', contextPath + zoomPageUrl);
    var imgElement = anchorElement.getElementsByTagName('img')[0];
    if (imgElement == null) {
        imgElement = document.createElement('img');
        //imgElement.setAttribute('target', '_blank');
        anchorElement.appendChild(imgElement);
    }
    imgElement.setAttribute('src', contextPath + slideImgUrl);
    var captionElement = document.getElementById(captionId);
    captionElement.innerHTML = captionHtml;
    imgElement.setAttribute('alt', imageAlt);
    imgElement.setAttribute('title', imageAlt);
}