function subscribe(){
	if($("#sub_thanks").size()>0){
		$("#sub_thanks").remove();
	}
	var email = $('#sub_email').val();
	if(email.length<5){
		alert("Please fill in an email address.");
		return;
	}
	var zipCode = $('#sub_zipCode').val();
	if(zipCode.length < 3){
		alert("Please fill in a zip/postal code.");
		return;
	}
	$.get("subscribe.php",{sub_email:email,sub_zipCode:zipCode},function(data){
		$("td.left div").append(data);
	});
}