function ShowImage(srcImg, destUrl) {
    var elSrc = document.getElementById(srcImg);
    var elPvw = document.getElementById("preview");
    var elLod = document.getElementById("loading");
    var elPrm = document.getElementById("prompt");
    if (elSrc) {
        elLod.style.display = "block";
        elPvw.style.display = "block";
        elPrm.style.display = "none";
        elPvw.src = elSrc.src;
        elPvw.alt = elSrc.alt;
        var img = new Image();
        img.onload = function() {
            elPvw.src = img.src;
            elLod.style.display = "none";
        }
        img.src = destUrl;
    }
}