What this is This is a query toggle to collapse your sidebar. It will add a cookie to save your setting. Installation Upload the contents of the upload folder to your XenForo root directory. Import addon-collapsible_sidebar.xml That is it! Frequently Asked Questions (I will add to these as they arise) I am not seeing the sidebar icon that collapses/expands, how do I fix that? This is likely due to you using a different style directory other than default. This addon is setup so that you can use custom arrows (left and right) for each of your styles. In order to fix this, you must upload the CollapsibleSidebar folder to each of your style folders. Compatibility This has been tested in IE8, IE9, Chrome, as well as Firefox, all seem to be well. Demo If you would like to see a demo, you can see it at BBSmiley. Please feel free to let me know what you think, or how we can improve it.