Lean Slider is a simple jQuery image slider built on the principles of Progressive Enhancement.
Unlike other sliders it does not provide any styling or fancy transition effects. It simply provides a javascript framework (slideshow functionality, navigation controls, callback functions etc.) for you to build a slider on top of.
The idea is that you provide your own styling and transition styles in the form of CSS styles and transitions. This is not for beginners and will require a solid knowledge of up-to-date web development practices to make the Lean Slider look good.