function validateEmailAddress(emailStr)	
{	
	var emailReg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
	var emailReg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,6}|[0-9]{1,3})(\]?)$/; // valid
	if (!(!emailReg1.test(emailStr) && emailReg2.test(emailStr))) 
	{
		return false;
	}
	else
	{
		return true;
	}
}