function updateField(trigger, field)
{
	trigger = document.getElementById(trigger).checked;
	if (trigger == true)
	{
		for (var i=0; i<field.length; i++)
		{
			document.getElementById(field[i]).style.display = "block";
		}
	}
	else
	{
		for (var i=0; i<field.length; i++)
		{
			document.getElementById(field[i]).style.display = "none";
		}
	}
}