function Nuevo_Ajax()
{
var xmlhttp=false;
 try {
  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 } catch (e) {
  try {
   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  } catch (E) {
   xmlhttp = false;
  }
 }

if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
  xmlhttp = new XMLHttpRequest();
}
return xmlhttp;
}

function Enviar_Mail()
{
	var c = document.getElementById ('formulario');
	
	//variable=documenet.nombre_del_form.nombre_del_control.value
	var Email = document.getElementById('EMail').value;
	var Name = document.getElementById('Nombre').value;
	var Phone = document.getElementById('Phone').value;	
	var Message = document.getElementById('Comentarios').value;
		
	ajax=Nuevo_Ajax();
	c.innerHTML = '<p style="text-align:center;"><img src="./images/esperando.gif"/></p>'; 
	ajax.open("POST", "./includes/enviar_mail.php",true);
	ajax.onreadystatechange=function() {
		if (ajax.readyState==4) {
			c.innerHTML = ajax.responseText
		}
		Borrar_Campos()
	}
	ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	ajax.send("emisor="+Email+"&mensaje="+Message+"&nombre="+Name+"&telefono="+Phone)
}

function Borrar_Campos ()
{	
	var Email = document.getElementById('EMail');
	var Name = document.getElementById('Nombre');
	var Phone = document.getElementById('Phone');	
	var Message = document.getElementById('Comentarios');
	
	Email.value = '';
	Name.value = '';
	Phone.value = '';
	Message.value = ''	
}