phoneField_3.js

/*******************************************************
  * validatePhone
  * return true if the string 'p' is a valid phone
*******************************************************/
function validatePhone(p){
  var phoneRe = /^[(]{0,1}[0-9]{3}[)]{0,1}[-\s\.]{0,1}[0-9]{3}[-\s\.]{0,1}[0-9]{4}$/;
  var digits = p.replace(/\D/g, "");
  return phoneRe.test(digits);
}