While working on an up-and-coming web service, I found that apparently Internet Explorer does not cope well with fading <table> elements using jQuery. Here’s what I was doing: tbl = $('#primaryColumn table'); loading = $('#primaryColumn .loading'); tbl.fadeTo(300, 0.0, function() { loading.show(); tbl.load('/contacts/{pagination:page}/' + page_num + '?ajax&search={pagination:search}', function() { [...]

hoverIntent is a plug-in that works like (and was derived from) jQuery’s built-in hover. However, instead of immediately calling the onMouseOver function, it waits until the user’s mouse slows down enough before making the call. Why? To delay or prevent the accidental firing of animations or ajax calls. Simple timeouts work for small areas, but [...]

This experimental plugin for the jQuery UI datepicker widget looks promising: You can get it via SVN. Update: The Filament Group has also made a really cool datepicker.