var totalImages = imageArray.length - 1;

function loadImage() {
    var curImg = 0;
    document.getElementById('imageNum').value = curImg;
    document.getElementById('imageNum').value = curImg;
    document.getElementById('imgLabel').innerHTML = imageArray[curImg];
}

function nextImage(base) {
    var curImg = document.getElementById('imageNum').value;
    var nextImg;
    if (curImg == totalImages) {
        nextImg = 0;
    }
    else {
        nextImg = parseInt(curImg) + 1;
    }
    document.getElementById('slideImg').src = base + '/' + nextImg + '.jpg';
    document.getElementById('imageNum').value = nextImg;
    document.getElementById('imgLabel').innerHTML = imageArray[nextImg];
}

function prevImage(base) {
    var curImg = document.getElementById('imageNum').value;
    var prevImg = parseInt(curImg) - 1;
    if (curImg == 0) {
        prevImg = totalImages;
    }
    document.getElementById('slideImg').src = base + '/' + prevImg + '.jpg';
    document.getElementById('imageNum').value = prevImg;
    document.getElementById('imgLabel').innerHTML = imageArray[prevImg];
}