I recently upgraded to jQuery 1.4 from 1.2.x and have found that the following code, which previously worked across all browsers, no longer works seamlessly in Internet Explorer:

<form id="myform">

  <input type="file">

</form>

...

$('#myform input).change(function() { alert("Someone picked a file") });

...

In Firefox, this code continues to work like it did prior to 1.4, namely, as soon as the user picks a file, the change event fires.  But in IE 7 (the only IE I've tested it in) the change event no longer fires, unless/until I click inside the browser window after choosing my file.  I'm guessing it has something to do with the event not firing until something (not sure what... maybe the page itself?) gets focus. 

Is this known/expected behavior with 1.4?  If so, does anyone know how I can work around it to make 1.4 behave like 1.2.x did, where IE's change event will fire immediately after the file is picked without an extra click in the window?

Thanks, Bill