var rightClickWarning = "All photos are the property of Kolman Rosenberg!";
function rightProtect(e) {
    if (window.event) {
        var srcEl = event.srcElement ? event.srcElement : event.target;
    } else {
        var srcEl = e.srcElement ? e.srcElement : e.target;
    }
    var className = srcEl.className;
    if (className.indexOf('protected') != -1) {
        window.alert(rightClickWarning);
        return false;
    } else {
        return true;
    }
}
document.oncontextmenu = rightProtect;