var xmlHttp;// global instance of XMLHttpRequest
function createXmlHttpRequest()
{
     if(window.ActiveXObject){
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
     }

   	 else if(window.XMLHttpRequest){
        xmlHttp=new XMLHttpRequest();
     }

}

function boletinEnviar()
{
	var ok=true;
  	var msg = document.getElementById('msgBoletin');	
  	var formulario = document.getElementById('campo');
	formulario.style.display = 'none';
	var boton1 = document.getElementById('boton'); 
	var boton2 = document.getElementById('botonRegresar'); 
		msg.style.display = 'block';  
	document.getElementById("msgBoletin").innerHTML="Enviando datos";
		
  	var miMail=document.boletinFrm.correo.value;
	
	var filter=/^[A-Za-z][A-Za-z0-9_.-]*@[A-Za-z0-9_-]+\.[A-Za-z0-9_.]+[A-za-z]$/;
	if (miMail.length > 0 ){
		if (!filter.test(miMail)){
			ok=false;
		}
	}else{
		ok=false;
	}
		
	if (ok){
		createXmlHttpRequest();
  		xmlHttp.open("GET","../php_xml/suscribe.php?email=" + miMail,true);
  		xmlHttp.onreadystatechange=handleStateB;
  		xmlHttp.send(null);																
	}else{
		document.getElementById("msgBoletin").innerHTML="Mail inválido.";
		boton1.style.display = "none";
		boton2.style.display = "block";
	}
}


function handleStateB()
{ 
  	var msg = document.getElementById('msgBoletin');
  	var formulario = document.getElementById('campo');
	var boton1 = document.getElementById('boton'); 
	var boton2 = document.getElementById('botonRegresar'); 

	boton1.style.display = 'none';
	boton2.style.display = 'block';
	formulario.style.display = 'none';
	msg.style.display = 'block';
	document.getElementById("msgBoletin").innerHTML="Enviando...";
	  
    if(xmlHttp.readyState==4)
    {
        if(xmlHttp.status==200)
        {
          	var res =  xmlHttp.responseText;
                 if (res=="Error")
                 {
	             	document.getElementById("msgBoletin").innerHTML="Error al enviar.";
                 } else {
	            	document.getElementById("msgBoletin").innerHTML="Tu mail se ha<br>&nbsp;&nbsp;agregado con &eacute;xito";
                 }
        }else {
                 document.getElementById("msgBoletin").innerHTML="Ha ocurrido un error, int&eacute;ntalo m&aacute;s tarde";
        }
    }
}


function muestraFormBoletin(){	
	var formulario = document.getElementById('campo');
	formulario.style.display = 'block';
	var boton1 = document.getElementById('boton'); 
	boton1.style.display = "block";
	
	var msg = document.getElementById('msgBoletin');
	msg.style.display = 'none';
	document.getElementById("msgBoletin").innerHTML="";
	var boton2 = document.getElementById('botonRegresar'); 
	boton2.style.display = "none";
}