Thanks for suggestion.
I've noted that when the page is first loaded the length property of node is 2, but after full refresh is 1.

var inputNode4 = dojo.query('[id$="lblNome"]');
if(inputNode4!=null && inputNode4.length>0) {
  inputNode4[inputNode4.length-1].innerHTML = value;
}

The script works only when length=2.


So I've added:

XSP.addOnLoad(function() { code });

with this code:

var mynode = dojo.query('[id$="lblNome"]');
if(mynode!=null && mynode.length!=2) {
  var frame = dojo.query('[id$="frame"]');
  if(frame!=null && frame.length>0)
    XSP.partialRefreshGet(frame[0].id);
}

note: 'frame' is the main panel which include all controls.

Now this works! Thank you!