var _ibp_trim_number;
if (typeof _ibp_alreadyshown != "undefined") {
   _ibp_trim_number = trimAll(_ibp_alreadyshown);
}
if (typeof _ibp_phone_number != "undefined") {
   _ibp_trim_number = trimAll(_ibp_phone_number);
}
var new_number = _ibp_trim_number.substr(0, 3) + "." + _ibp_trim_number.substr(3, 3) + "." + _ibp_trim_number.substr(6);
document.write(new_number);

function trimAll(sString) {
   while (sString.substring(0, 1) == ' ') {
      sString = sString.substring(1, sString.length);
   }
   while (sString.substring(sString.length - 1, sString.length) == ' ') {
      sString = sString.substring(0, sString.length - 1);
   }
   return sString;
}