function toggleMenu(name) {
    if (document.getElementById(name).style.display == "none") {
        document.getElementById(name).style.display = "";
    } else {
        document.getElementById(name).style.display = "none";
    }
}

function showButtons(layer, cell)
{
    // document.getElementById(layer).style.visibility = 'visible';
    document.getElementById(cell).className = 'sectioncellon';
}
function hideButtons(layer, cell)
{
    // document.getElementById(layer).style.visibility = 'hidden';
    document.getElementById(cell).className = 'sectioncelloff';
}

function showGalleryImage(num1, num2)
{
  document.getElementById('thumbnails' + num1).style.display = 'none';
  document.getElementById('full' + num1 + '_' + num2).style.display = 'block';
}

function hideGalleryImage(num1, num2)
{
  document.getElementById('thumbnails' + num1).style.display = 'block';
  document.getElementById('full' + num1 + '_' + num2).style.display = 'none';
}