Can you reload only part of the page?

On our services page, we would like to have a list of services which, when clicked, will update the right-hand side of the page with text describing that particular service.  Is there a way to do this?  The only link actions seem to be opening a new page or a popup, but we don't want either.  In other words, is there an easy way to update the text in a rich content block dynamically?

Thanks.