JQuery :: Upgrading From 1.4.2 To 1.4.3 Wrong .load Method Being Called

Got the following code, which loads some html into a div, then set's the focus to a textbox:

This works fine with 1.4.2, but with 1.4.3 I get an error in jquery-1.4.3.js using Firebug: handler is undefined Line 1797

This happens on line 2 of the code

To me it looks as if the wrong .load method is being called, from the jQuery docs:[url]

Note: The event handling suite also has a method named .load(). Which one is fired depends on the set of arguments passed.

I think the event .load method is being called because line 1797 in jquery-1.4.3.js

if ( handler.handler ) {and comments around it talk about binding events to objects etc.

Can anyone confirm this is the case, or something else is causing the error with 1.4.3