function testTelNumber (field) {
				  var myTelNo = document.getElementById(field).value;
				  // If invalid number, report back error
				  if (!checkUKTelephone (myTelNo)) {
				     alert (telNumberErrors[telNumberErrorNo]);
				     return false;
				  }
				  // Otherwise redisplay telephone number on form in corrected format
				  else {
				     document.getElementById(field).value =  checkUKTelephone (myTelNo);

				  }
				}

function nclValidation() {

            
            
           if (document.getElementById("callback_name").value == "") {

                        alert("Please type in your full name");

                        return false;

            }


                      


            if (document.getElementById("callback_phone").value == "") {

                        alert("Please type in your telephone number");

                        return false;

            }

            if (false == testTelNumber ("callback_phone") ) {
                        return false;

            }








            return true;
}


function cbValidation() {

            
            
           if (document.getElementById("Request_Callback1_callback_name").value == "") {

                        alert("Please type in your full name");

                        return false;

            }


                      


            if (document.getElementById("Request_Callback1_callback_phone").value == "") {

                        alert("Please type in your telephone number");

                        return false;

            }

            if (false == testTelNumber ("Request_Callback1_callback_phone") ) {
                        return false;

            }








            return true;
}