function validate_phone() {
   phone = document.cforms6form.phone_areacode.value;
   phone = phone.concat(document.cforms6form.phone_prefix.value,document.cforms6form.phone_suffix.value);
   if (phone.length != 10) {
   alert("Sorry, please enter your 10-digit phone number before you click to call us.");
   return false;
   }
   return true;
 }