function Toggle_SetVisibility(linkId, imageId, panelId, visibility, openText, closeText, openImageUrl, closeImageUrl) {
  var lnk = document.getElementById(linkId);
  var img = document.getElementById(imageId);
  var pnl = document.getElementById(panelId);
  if (img != null){
    if (pnl.style.display == 'none'){
      img.src = closeImageUrl ;
      img.alt = closeText;
      pnl.style.display = visibility;
    }
    else {
      pnl.style.display = 'none';
      img.src = openImageUrl ;
      img.alt = openText;
    }
  }
  else {
    if (pnl.style.display == 'none'){
      pnl.style.display = visibility;
      var txt = document.createTextNode(closeText);
      lnk.childNodes[0].nodeValue = closeText;
    }
    else {
      pnl.style.display = 'none';
      var txt = document.createTextNode(openText);
      lnk.childNodes[0].nodeValue = openText;
    }
  }
}