function changeTable(tableOnID)
{
    //turn them all off first
    document.getElementById('portfolio_nutrition').style.display = 'none';
    document.getElementById('portfolio_bow').style.display = 'none';
    document.getElementById('portfolio_switch').style.display = 'none';
    document.getElementById('portfolio_hill').style.display = 'none';
    document.getElementById('portfolio_tu').style.display = 'none';
    document.getElementById('portfolio_lemonade').style.display = 'none';
    document.getElementById('portfolio_kakos').style.display = 'none';
    document.getElementById('portfolio_move').style.display = 'none';
    document.getElementById('portfolio_vices').style.display = 'none';

    
    //then turn on the one you want
    document.getElementById(tableOnID).style.display = 'block';
    
}