function glue_address(piece) {
	var base = piece.name.substring(0, piece.name.indexOf('_'));
	var name = eval('piece.form.'+base+'_name.value');
	var addr = eval('piece.form.'+base+'_addr.value');

	var target = eval('piece.form.'+base);
	target.value = (name?name:addr) +' <'+addr+'>';
}