function ltrim(argvalue) {
  while (1) {
	if (argvalue.substring(0, 1) != " ")
	  break;
	argvalue = argvalue.substring(1, argvalue.length);
  }
  return argvalue;
}

function rtrim(argvalue) {
  while (1) {
	if (argvalue.substring(argvalue.length - 1, argvalue.length) != " ")
	  break;
	argvalue = argvalue.substring(0, argvalue.length - 1);
  }
  return argvalue;
}
function trim(argvalue){
	return rtrim(ltrim(argvalue));
}