function flick_keuzes(type,checked)
{
	//document.getElementById('postcode_naar').value = '';
	//document.getElementById('postcode_van').value = '';
	if (checked)
	{
		if (type == 'vanpostcode') 
		{
			//document.getElementById('inh').innerHTML = document.getElementById('vanpostcode').innerHTML;
			document.getElementById('vanpostcode').style.display='block';
			document.getElementById('vanvliegveld').style.display='none';
		}
		else if (type == 'vanvliegveld') 
		{
			document.getElementById('vanpostcode').style.display='none';
			document.getElementById('vanvliegveld').style.display='block';
		}
	}
}