function isValidEmailSyntax(strEmail)
{
   var i;
	var ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i = 0; i < strEmail.length; i++)
	{
		if(ok.indexOf(strEmail.charAt(i)) < 0)
		{
			return false;
		}
	}

	re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
	re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;

	if (strEmail.match(re) || !strEmail.match(re_two))
	{
		return false;
	}
	
	return true;
}