function emailOK(isObj){
	if (!ValidateEmail(isObj.value),'man')
  		{
   		alert("Please enter a valid Email Address");
   		isObj.focus();
   		isObj.select();
  		}
 	else
  		document.SubscribeListForm.submit();
}

function ValidateEmail(addr,man,db){
	if (addr == '')
		{
		if (db) alert('Email address is mandatory.');
			return false;
		}
	if (addr == '')
		return true;
		
	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;
}