function showTr(id) {
	document.getElementById('file_add').style.visibility='collapse';
	document.getElementById('address_add').style.visibility='collapse';
	document.getElementById('discription').style.visibility='collapse';
	if (document.getElementById(id) != 'PT') {
		document.getElementById(id).style.visibility='visible';
		document.getElementById('discription').style.visibility='visible';
	}
}