JB Library Plugin is a powerful site optimization tool for Joomla, which you can use in Joomla 1.5, 2.5 and 3.x. JB Library Plugin allows you to disable Mootools of your Joomla website directly in extension admin. You can also ban other selected JQuery scripts or load it external by libraries, like Google CDN. No conflicts in future, the integrated Javascript Loader load all Javascript files of your website in the correct order. Joomlabamboo adds some other fine features, like a LazyLoad function or a BacktoTop button. JB Library Plugin is free and downloadable on Joomlabamboo's website.