$(document).ready(function(){
	$("#cadastrar_email").click(function () {
		if ($("#email").val() == '') {
			alert('Digite o E-mail!');
			$("#email").focus();
			return false;
		}
		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!filter.test($("#email").val())) {
			alert('E-mail inválido!');
			$("#email").focus();
			return false;
		}
		
		$.ajax({
			type: "POST",
			url: "informativo.php",
			data: "email="+$("#email").val(),
			success: function(msg){
				alert(msg);
				$("#email").val('')
			}
		});
	});
});