RegExps & Phone Numbers

var phone = prompt("Please enter your Phone Number:", "(650) 941-1111");

var pattern = /^(\(\d{3}\))?\s?(\d{3}-\d{4})$/;

if (pattern.test(phone)) {
     if (RegExp.$1) alert("Area Code: " + RegExp.$1 + "\n\nPhone Number: " + RegExp.$2);
     else alert("You entered the Phone Number: " + phone);
}
else alert("Please enter the Phone Number in the form (123) 456-7890.\n\n
                  The Area Code is optional.");

</SCRIPT>