function formatPostcode(in_objElement)
{
	in_objElement.value = in_objElement.value.replace(/\D/g, '').substr(0, 5);
}

function checkMaxTextLength(in_strId)
{
	var objField = document.getElementById('free_fields_field_' + in_strId);
	document.getElementById('free_fields_num_act_' + in_strId).firstChild.nodeValue = objField.value.length;
	if (objField.value.length > arrMapFieldsToMaxTextLength[in_strId])
	{
		objField.className = 'frm-element-error';
		document.getElementById('free_fields_num_act_' + in_strId).className = 'text-warning';
	}
	else
	{
		objField.className = 'frm-element-ok';
		document.getElementById('free_fields_num_act_' + in_strId).className = 'label';
	}
}