// JavaScript Document
function validate(FirstName, LastName, EmailAddress) {
	msg = ''; //FirstName + '\n' + LastName + '\n' + EmailAddress + '\n';;
	if (isblank(FirstName))
		msg += 'Invalid first name\n';
	if (isblank(LastName))
		msg += 'Invalid last name\n';	
	if (!validateEmail(EmailAddress, true, false))
		msg += 'Invalid Email address';
	
	if (msg != '') {
		alert(msg);
		return false;
	}
	return true;
}

function isblank(e)
{
	if (e == "") 
		return true;
	
	for (var i = 0; i < e.length; i++)
		{
			var c = e.charAt(i);
			if ((c != ' ') && (c != '\n') && (c != '\t'))
				return false;
		}
		return true;
}

// 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 (isblank(addr)) return false;
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;
}