function residents_tab(n)
{
    for (i = 1; i <= 5; i ++)
    {
	if (i == n)
	{
	    document.getElementById('sequence'+i).className = 'visible';
	    document.getElementById('sequence_text'+i).className = 'visible';
	    document.getElementById('toplink'+i).className = 'about-for-active';
	    document.getElementById('curlink').innerHTML = document.getElementById('toplink'+i).innerHTML;
	}
	else
	{
	    document.getElementById('sequence'+i).className = 'notvisible';
	    document.getElementById('sequence_text'+i).className = 'notvisible';
	    document.getElementById('toplink'+i).className = 'about-for';
	}
    }
}