function trim_quotes($s) {
if ( substr($s, 0, 1) == '"') $s = substr($s, 1);
if ( substr($s, -1, 1) == '"') $s = substr($s, 0, -1);
function trim_quotes($s) {
if ( substr($s, 0, 1) == '"') $s = substr($s, 1);
if ( substr($s, -1, 1) == '"') $s = substr($s, 0, -1);