var g_bFanState = false;
function EnterFan()
{
	var domTb = document.getElementById("fan_tab");
	if(domTb)
	{
		
		if(g_bFanState)
			domTb.style.display = "none";
		else
			domTb.style.display = "block";
	}
	
	var sState = "hidden";
    if(g_bFanState)
        document.getElementById('fan_id').value=0;
    else
    {
        document.getElementById('fan_id').value=1;
        sState = "visible";
	}
    g_bFanState = !g_bFanState;
    document.getElementById("nc_usr_gender").style.visibility = sState;
    document.getElementById("nc_usr_birth").style.visibility = sState;
    document.getElementById("nc_usr_city").style.visibility = sState;
}

function Fill()
{
	if(document.forms.registration.fan.value==1)
		EnterFan();
}

window.onload = Fill;