var XMLHttpRequestObject = false;

  if (window.XMLHttpRequest) {

  XMLHttpRequestObject = new XMLHttpRequest();

  } else if (window.ActiveXObject) {

  XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");

  }

  function pedirDatos(fuenteDatos, url){
  
document.getElementById(url).innerHTML = '<br><center><img src=PEAR/loading.gif><br><br><b><font size="1" face="Tahoma">Buscando Video!<br>Espera...</font></b></center>';

  if(XMLHttpRequestObject) {

  var obj = document.getElementById(url);

  XMLHttpRequestObject.open("GET", fuenteDatos);

  XMLHttpRequestObject.onreadystatechange = function(){

  if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {

  obj.innerHTML = XMLHttpRequestObject.responseText;

  }

  }

  XMLHttpRequestObject.send(null);

  } 

  }