document.write('<div id="loading"><p>Procesando...<br /> Por favor espere!!</p><img class="loadgif" src="/extranet/myimages/loading.gif" border="0"></div>');

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
	document.getElementById("loading").style.display="none";
	fill_title();
});

/*
addLoadEvent(nameOfSomeFunctionToRunOnPageLoad);
addLoadEvent(function() {
  // more code to run on page load 
});
*/