function showInfoBar(which) {
    var infoBar = document.getElementById('infoBar' + which);
    var infoLink = document.getElementById('header1_infoLink' + which);
    
    if (infoBar != null) infoBar.style.display = 'block';
    infoLink.className = 'topLinkHover';
}

function hideInfoBar(which) {
    var infoBar = document.getElementById('infoBar' + which);
    var infoLink = document.getElementById('header1_infoLink' + which);

    if (infoBar != null) infoBar.style.display = 'none';
    infoLink.className = 'topLink';
}