function trim(s) {
	
	//alert ('top trim');
	
  while (s.substring(0,1) == ' ') {
    s = s.substring(1,s.length);
  }
  while (s.substring(s.length-1,s.length) == ' ') {
    s = s.substring(0,s.length-1);
  }
	
//	alert ('string = ' + s);
	
//	alert ('bottom of trim');
	
  return s;
}