function checkAddress()
{
	email = $('txt_comment_email').value;
	if ('' == email)
	{
		alert("E-mail field is empty. Please enter something!");
		return false;
	}
	else
	{
		pattern = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    	if (!pattern.test(email))
    	{
        	alert("Sorry, that e-mail address looks suspect. Please re-enter. Thanks!");
        	return false;
    	}
    	else
    	{
    		return true;
    	}
    }
}