if (document.images) {
  image1normal = new Image();
  image1normal.src = "/images/artsackett_logo_large-2-1.png";

  image1over = new Image();
  image1over.src = "/images/artsackett_logo_large-2-2.png";

  image1clicked = new Image();
  image1clicked.src = "/images/artsackett_logo_large-2-3.png";

  imgBulletGreen = new Image();
  imgBulletGreen.src = "/images/bullet_green.png";

  imgBulletGrey = new Image();
  imgBulletGrey.src = "/images/bullet_grey.png";

  imgBulletRed = new Image();
  imgBulletRed.src = "/images/bullet_red.png";
}


function bulletGreen(imageName) {
  if (document.images) {
    document[imageName].src = imgBulletGreen.src;
  }
}


function bulletGrey(imageName) {
  if (document.images) {
    document[imageName].src = imgBulletGrey.src;
  }
}


function bulletRed(imageName) {
  if (document.images) {
    document[imageName].src = imgBulletRed.src;
  }
}


function imageNormal(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + 'normal.src');
  }
}


function imageOver(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + 'over.src');
  }
}


function imageClicked(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + 'clicked.src');
  }
}