Well, it’s not built into AnythingSlider, but the FX extension can do this for you:
1) Use the [FX extension](http://css-tricks.github.com/AnythingSlider/demos.html) and target the entire panel to move it in the direction you desire. You can use the [AnythingSlider FX Builder](http://css-tricks.github.com/AnythingSlider-Fx-Builder/) bookmarklet if you need help with the code.
2) Use the FX extension with the (css3) [animate.css](http://daneden.me/animate/) library to add some really cool transitions. Check out [this demo](http://css-tricks.github.com/AnythingSlider/css3.html).