function changeImage(id, imageName, imageTitle, strLink){
        if (document.getElementById("img" + id)) {
            document.getElementById("img" + id).src = imageName;
            document.getElementById("img" + id).title = imageTitle;
            document.getElementById("img" + id).alt = imageTitle;
            document.getElementById("lnk" + id).href = strLink;
        }
    }