[eluser]sophistry[/eluser]
no, i'm feeling grouchy so i won't do the searching for you. ;-)
search the forum for Modular Extensions if you don't want to use the (shortcut) cache solution to the dynamically-generated sidebar issue.
you would also do well to follow wiredesignz in general to learn about CI. click through to his member page and look at his posts and threads to see how an advanced coder with good knowledge of CI really works.