The only thing that doesn't work is, when I select a new tab, tablesorters' rows do not have their every-other-row bgcolor (all rows have bgcolor of white) until I switch to page 2 of the tablesorter...and then all pages are striped correctly.
...and then click and drag a grid element, the dragged grid element jumps up so that its bottom edge is flush with the top edge of the parent div. Moving the mouse left/right moves the grid element left/right. Moving the mouse up/down does not do anything to the grid element. And, when I release the mouse button, the grid element always returns to its original location.