var req;

function processReqChange() {
  if (req.readyState == 4) {
    if (req.status == 200) {
      arr_data=req.responseText.split("|");
	  document.getElementById("num_login_unico").innerHTML=arr_data[5];	 		
    } else {
      alert("Se ha producido un error al intentar realizar el envio.\nIntentelo de nuevo mas tarde.\n");
    }
  }
}

function get_data(vec_datos) {
	
  url="getdata.php";
	 var vec_datos="vec_datos="+vec_datos;

  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
    req.onreadystatechange = processReqChange;
    req.open("POST", url, true);
  req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  req.send(vec_datos); 		
    //req.send(null);
		
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
    if (req) {
      req.onreadystatechange = processReqChange;
      req.open("POST", url, true);
       req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
       req.send(vec_datos); 			
      //req.send();
    }
  }
}