$(document).ready(function() {

	$("#contact").submit(function() {
		var submitOk = true;
		var emailFilter=/^.+@.+\..{2,4}$/;

		if ($("#nombre").val() == "") {
			submitOk = false;
			$("#nombre").focus();
			alert('Write your name, please');
		}

		if ($("#email").val() == "" && submitOk) {
			submitOk = false;
			$("#email").focus();
			alert('Write your email, please');
		}

		if (!(emailFilter.test($("#email").val())) && submitOk) {
			submitOk = false;
			$("#email").focus();
			alert('Your email seems invalid');
		}

		if ($("#texto").val() == "" && submitOk) {
			submitOk = false;
			$("#texto").focus();
			alert('Write something in the text box, please');
		}

		return submitOk;
	});

});