function setDisplaySwitch(source_o)
{

	var element_o = document.getElementById(source_o);
		element_o.style.display = '';

};

function setExtra(select_o, value_s, field_s)
{
	document.getElementById(field_s).style.display = 'none';
	var value_u = select_o.options[select_o.selectedIndex].value;

	if (value_u == value_s)
	{
		document.getElementById(field_s).style.display = '';
	}
}

function setRadioSwitch(source_o, value_s)
{
	if(value_s == 'anders')
	{
		var element_o = document.getElementById(source_o);
			element_o.style.display = '';
	}
	else
	{
		var element_o = document.getElementById(source_o);
			element_o.style.display = 'none';
	}
};