function toggleMainTextVisibility()
{
    var hidden = document.getElementById('mainHiddenText');
    var showMore = document.getElementById('mainLinkShowMore');
    if(hidden.style.display == 'none')
    {
        hidden.style.display = '';
        showMore.style.display = 'none';
    }
    else
    {
        hidden.style.display = 'none';
        showMore.style.display = '';
    }
}