var numGroups = 2;
var currentImg = new Array();
var currentTxt = new Array();
for (i=1; i<= numGroups; i++)
{
  currentImg[i] = null;
  currentTxt[i] = null;
}

function showImage(group, id)
{
  if (currentImg[group] == null)
  {
    currentImg[group] = document.getElementById(group + "pic00");
    currentTxt[group] = document.getElementById(group + "txt00");
  }

  newImg = document.getElementById(group + "pic" + id);
  newTxt = document.getElementById(group + "txt" + id);

  if (currentImg[group] != newImg)
  {
    currentImg[group].style.display = "none";
    newImg.style.display = "inline";
    currentTxt[group].style.display = "none";
    newTxt.style.display = "inline";
    currentImg[group] = newImg;
    currentTxt[group] = newTxt;
  }

}

function showImage2(group, id)
{
  if (currentImg[group] == null)
  {
    currentImg[group] = document.getElementById(group + "pic00");
    currentTxt[group] = document.getElementById(group + "txt00");
  }

  newImg = document.getElementById("pic" + id);
  newTxt = document.getElementById("txt" + id);

  if (currentImg[group] != newImg)
  {
    currentImg[group].style.display = "none";
    newImg.style.display = "inline";
    currentTxt[group].style.display = "none";
    newTxt.style.display = "inline";
    currentImg[group] = newImg;
    currentTxt[group] = newTxt;
  }

}