function swapthis(lnk) {
    
    var imgItem = imgList[lnk.id];

    var divforImgLink = document.getElementById("imglinkContainer");
    setImage(imgItem[0].imgUrl, imgItem[0].imgCaption);
    divforImgLink.innerHTML = "";

    if (imgItem.length > 1) {
        var imgLinks = "";
        for (i = 0; i < imgItem.length; i++) {
            imgLinks += "<a class=\"imglink\" onclick=\"javascript:return setImage('" + imgItem[i].imgUrl + "','" + imgItem[i].imgCaption + "');\">" + (i+1) + "</a>"
        }
        divforImgLink.innerHTML = imgLinks;
    }
    return false;
}

function setImage(imgUrl, imgCaption) {
    var displayedCaption = document.getElementById("caption");
    displayedCaption.firstChild.nodeValue = imgCaption;
    document.images.imgPhoto.src = "../assets/" + imgUrl;
    return false;
}