How to handle onchange event on input type=file in jQuery?

Demo : http://jsfiddle.net/NbGBj/

$("document").ready(function(){

    $("#upload").change(function() {
        alert('changed!');
    });
});

Or could be:

$('input[type=file]').change(function () {
    alert("hola");
});

To be specific: $('input[type=file]#fileUpload1').change(...