// validator.js
// An example of input validation using the change and submit 
// events

// The event handler function for the name text box

function chkName() {
 var myName = document.getElementById("custName");

// Test the format of the input name 
// Allow the spaces after the commas to be optional
// Allow the period after the initial to be optional

 var pos = myName.value.search(
 /^[A-Z][a-z]+, ?[A-Z][a-z]+, ?[A-Z]\.?$/);

 if (pos != 0) {
 alert("The name you entered (" + myName.value + 
 ") is not in the correct form. \n" +
 "The correct form is: " +
 "last-name, first-name, middle-initial \n" +
 "Please go back and fix your name");
 return false;
 } else
 return true;
}

// The event handler function for the phone number text box

function chkPhone() {
 var myPhone = document.getElementById("phone");

// Test the format of the input phone number

 var pos = myPhone.value.search(/^\d{3}-\d{3}-\d{4}$/);

 if (pos != 0) {
 alert("The phone number you entered (" + myPhone.value +
 ") is not in the correct form. \n" +
 "The correct form is: ddd-ddd-dddd \n" +
 "Please go back and fix your phone number");
 return false;
 } else
 return true;
}