Hi I'm currently buidling my own website and know a feature i want and am looking for a script or some code to do it. only thing is i can't think what it would be called!

basically i want key features of the product on one side of the page, and the other side displays a description of each feature as it is clicked. I want it to load just on the far side of the page though rather than refreshing the whole page if that makes sense - i.e the user remains on the one page but the information changes as they click on things. any pointers would be appreciated!