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('Invalid email address.');
      return false;
   }
}
for (i=0; i<addr.length; i++) {
   if (addr.charCodeAt(i)>127) {
      if (db) alert("Invalid email address.");
      return false;
   }
}


var atPos = addr.indexOf('@',0);
if (atPos == -1) {
   if (db) alert('Invalid email address.');
   return false;
}
if (atPos == 0) {
   if (db) alert('Invalid email address.');
   return false;
}
if (addr.indexOf('@', atPos + 1) > - 1) {
   if (db) alert('Invalid email address.');
   return false;
}
if (addr.indexOf('.', atPos) == -1) {
   if (db) alert('Invalid email address.');
   return false;
}
if (addr.indexOf('@.',0) != -1) {
   if (db) alert('Invalid email address.');
   return false;
}
if (addr.indexOf('.@',0) != -1){
   if (db) alert('Invalid email address.');
   return false;
}
if (addr.indexOf('..',0) != -1) {
   if (db) alert('Invalid 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 email address');
//    return false;
// }

return true;
}