function about_tab(n)
{
    for (i = 1; i <= 5; i ++)
    {
	if (i == n)
	{
	    document.getElementById('sequence'+i).className = 'visible';
	    document.getElementById('forlink'+i).className = 'about-for-active';
	}
	else
	{
	    document.getElementById('sequence'+i).className = 'notvisible';
	    document.getElementById('forlink'+i).className = 'about-for';
	}
    }
}

function management_tab(n)
{
    for (i = 0; i <= 5; i ++)
    {
	if (i == n)
	{
	    document.getElementById('sequence'+i).className = 'visible';
	    document.getElementById('sequence_text'+i).className = 'visible';
	    document.getElementById('forlink'+i).className = 'about-for-active';
	}
	else
	{
	    document.getElementById('sequence'+i).className = 'notvisible';
	    document.getElementById('sequence_text'+i).className = 'notvisible';
	    document.getElementById('forlink'+i).className = 'about-for';
	}
    }
}

function staff_tab(name)
{
    document.getElementById('staffphoto').src = '/staff/'+name+'.jpg';
    
    for (i = 0; i < Staff.length; i ++)
    {
	if (Staff[i] == name)
	{
	    document.getElementById(Staff[i]).className = 'visible';
//	    alert(Staff[i]);
	}
	else
	{
	    document.getElementById(Staff[i]).className = 'notvisible';
	}
    }
}