Aaah I misunderstood what you were asking, which is a Javascript question and not really a Perl problem (whatever JS library you're using should provide some method of removing or changing event bindings; e.g. jquery would be something like $("textfield[name=name]").unbind( 'focus' ); $("textfield[name=name]").unbind('blur');).

Update: tweaks to sample jquery and link'd to unbind docs