function piw_checkCurImg(theURL, windowname) {
    if (typeof (piw_imgObj) == "object") {
        if (piw_imgObj.width != 0 && piw_imgObj.height != 0) {
            PopupImageWindow(theURL, windowname, ",width=" + (piw_imgObj.width + 20) + ",height=" + (piw_imgObj.height + 30));
        }
        else {
            setTimeout(function () {
                piw_checkCurImg(theURL, windowname);
            }, 100);
        }
    }
}

function PopupImageWindow(theURL, windowname, features) {
    var newWin;
    if (features == null || features == "") {
        piw_imgObj = new Image();
        piw_imgObj.src = theURL;
        piw_checkCurImg(theURL, windowname);
    }
    else {
        newWin = window.open(theURL, windowname, "toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no," + features);
        newWin.focus();
    }
}