function objetoAjax(){
	var httpRequest=false;
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            httpRequest = new XMLHttpRequest();
            if (httpRequest.overrideMimeType) {
                httpRequest.overrideMimeType('text/xml');
                // See note below about this line
            }
        } 
        else if (window.ActiveXObject) { // IE
            try {
                httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
                } 
                catch (e) {
                           try {
                                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
                               } 
                             catch (e) {}
                          }
                                       }

        if (!httpRequest) {
            alert('Giving up :( Cannot create an XMLHTTP instance');
            return false;
        }	
	return httpRequest;
}
//Enviar datos 
function enviar_datos(name,tel,mail,pais,estado,ciudad,msg){
  contenedor = document.getElementById('container');
  ajax=objetoAjax();
	ajax.open("POST","envia_datos.php",true);
	contenedor.innerHTML="Espere por favor...";
	ajax.onreadystatechange=function(){
	   if(ajax.readyState==4){
		   contenedor.innerHTML = ajax.responseText;
		 }
	}
	ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	ajax.send("Name="+name+"&Tel="+tel+"&Mail="+mail+"&Pais="+pais+"&Estado="+estado+"&Ciudad="+ciudad+"&Msg="+msg)
	
}