Note as of April 2010: While the plugin still works as it is, it has some shortcomings, and not maintained anymore. There are now plenty of alternative jQuery tree plugins, like jsTree. Note October 2010: Despite the above, I’ve moved the plugin to GitHub, fixed a bug when combining persist: “location” and prerendered: true, and released (tagged in Git) 1.4.1. Transform an unordered list into an e