[jQuery] Simple/short way to bind one event to multiple objects?

[cgp]

I have 2 or more objects that onclick(), will call the same function.
Right now I have the following:

....
$("#obj1").change( function() {
        setupPage();
});
$("#obj2").change( function() {
        setupPage();
});
$("#obj3").change( function() {
        setupPage();
});
....


I was wondering if there is a way to simplify or clean up the code,
since they are all doing the same thing and responding to the same
event. This is just for refactoring reasons because my code is getting
too long/messy.

Thanks.