It would be extremely useful if sortables could receive droppable elements that are not initially contained in the sortable.

An 'accept' parameter in the options hash could specify a class required on droppables to be allowed in the sortable.

If the accept parameter isn't present, then the default behaviour would be used.

The zebra widget won't work unless change the 803,804 lines from:

$("> tbody:first/

tr:visible:even",table).removeClass(table.config.widgetZebra.css[1]).addClass(table.config.widgetZebra.css[0]);

$("> tbody:first/

tr:visible:odd",table).removeClass(table.config.widgetZebra.css[0]).addClass(table.config.widgetZebra.css[1]);

to:

$("> tbody:first

tr:visible:even",table).removeClass(table.config.widgetZebra.css[1]).addClass(table.config.widgetZebra.css[0]);

$("> tbody:first

tr:visible:odd",table).removeClass(table.config.widgetZebra.css[0]).addClass(table.config.widgetZebra.css[1]);

Need a way to explicitly call an update on droppable objects positions. This will allow for animations that change the position of droppable objects to be triggered from draggable objects without positions getting out of sync. I attached a simple example to illustrate the problem.