How do I get my ui-widget-content container to highlight on a drop event in jquery?
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I am using jquery to implement a drag and drop operation.  I have two containers, that use the class ui-widget-content.  

I have enabled the binding using

                // let the todo be droppable as well, accepting items from the done
            $newtask.droppable({
                accept: "#inprogress li, #done li",
                activeClass: "custom-state-active",
                drop: function( event, ui ) {
                    recycleImage( ui.draggable );
                }
            });


while my container will accept the incoming LI, it does not highlight