lingo

// document.onkeydown=checkArrowKeys;
document.addEventListener('keydown', checkArrowKeys);

function checkArrowKeys(e) {
    var evt = e ? e : event;
    var mykey = evt.keyCode;
    if ((mykey == 37) && (prevKnot > 1)) {
        showButtons(ButtonFadeDelay);
        elemQ = document.getElementById('Prelim'); // Get Identity
        elemQ.style.zIndex = -2; // Hide Labelled Image If Showing