function switchTo(browser)
{
    document.getElementById('ff-arrow').style.display = 'none';
    document.getElementById('ff-content').style.display = 'none';

    document.getElementById('ie-content').style.display = 'none';
    document.getElementById('ie-arrow').style.display = 'none';

    document.getElementById('opera-arrow').style.display = 'none';
    document.getElementById('opera-content').style.display = 'none';

    document.getElementById(browser + '-arrow').style.display = 'block';
    document.getElementById(browser + '-content').style.display = 'block';
}