YUI has been a great tool to create fast RUI web applications. Intermediates, who are already using it, are complaining about important missing pieces. And experts are comparing it with other such libraries like DOJO, Script.Aculo.Us etc.Few of the most important features which are missing in YUI are expandable/collapsible panel. Accordion Menu etc. There exists a library which spices up few things for YUI named bubbling library. It does not provide solutions to all YUI problems but it does provides...
