function imgOn(imagePath, imageName)
{
  imageOn = new Image;
  imageOn.src = imagePath;
  document.images[imageName].src = imageOn.src;
  return true;
}

function imgOff(imagePath, imageName)
{
  imageOff = new Image;
  imageOff.src = imagePath;
  document.images[imageName].src = imageOff.src;
  return true;
}

function popUp(link)
{
  var windowWidth = 910;
  var windowHeight = 606;
  var top = (screen.availHeight-windowHeight)/2;
  var left = (screen.availWidth-windowWidth)/2;
  var windowName = "lookbook";
  var parameters = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width="+windowWidth+",height="+windowHeight+",top="+top+",left="+left;

  window.open(link, windowName, parameters);
}