droppable.init attempts to refer to a nonexistent property

[guest]

At the following line:

Store the droppable's proportions

this.proportions = { width: this.element.outerWidth(), height: this.element.outerHeight() };

The div I'm passing to droppable() does have a width() of 898 at the time droppable() is called, according to firebug. But it has no outerWidth(). So this init method fails with the error that outerWidth() is not a function. Why are we assuming the element has an outerWidth() here? Is it necessary?

[paul]

It's neccessary. The reason why it's failing for you is that you probably didn't use jQuery 1.2.4 (integrated in the zip package), or use a trunk version of jQuery.