function showNavigation (displayIn)
{
        hideNavigation();
        document.getElementById('position-menu-link-'+displayIn).className = 'det-tab-aktiv';
        document.getElementById('position-menu-'+displayIn).style.display = '';
        document.getElementById('position-menu-link-'+displayIn).style.color = '#003A80';
}

function hideNavigation ()
{
        for(i=1; i<=6; i++)
        {
                document.getElementById('position-menu-'+i).style.display = 'none';
                document.getElementById('position-menu-link-'+i).className = '';
                document.getElementById('position-menu-link-'+i).style.color = '#ffffff';
        }
}