// Email Validation Javascript

// copyright 23rd March 2003, by Stephen Chapman, Felgall Pty Ltd



// You have permission to copy and use this javascript provided that

// the content of the script is not changed in any way.



function validateEmail(addr,man,db) {

if (addr == '' && man) {

   if (db) alert('email address is mandatory');

   return false;

}

var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';

for (i=0; i<invalidChars.length; i++) {

   if (addr.indexOf(invalidChars.charAt(i),0) > -1) {

      if (db) alert('email address contains invalid characters');

      return false;

   }

}

for (i=0; i<addr.length; i++) {

   if (addr.charCodeAt(i)>127) {

      if (db) alert("email address contains non ascii characters.");

      return false;

   }

}



var atPos = addr.indexOf('@',0);

if (atPos == -1) {

   if (db) alert('email address must contain an @');

   return false;

}

if (atPos == 0) {

   if (db) alert('email address must not start with @');

   return false;

}

if (addr.indexOf('@', atPos + 1) > - 1) {

   if (db) alert('email address must contain only one @');

   return false;

}

if (addr.indexOf('.', atPos) == -1) {

   if (db) alert('email address must contain a period in the domain name');

   return false;

}

if (addr.indexOf('@.',0) != -1) {

   if (db) alert('period must not immediately follow @ in email address');

   return false;

}

if (addr.indexOf('.@',0) != -1){

   if (db) alert('period must not immediately precede @ in email address');

   return false;

}

if (addr.indexOf('..',0) != -1) {

   if (db) alert('two periods must not be adjacent in email address');

   return false;

}

var suffix = addr.substring(addr.lastIndexOf('.')+1);

if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum') {

   if (db) alert('invalid primary domain in email address');

   return false;

}

return true;

}