Frames are commonly used to create stable navigation links within a website. For instance, a site's navigation links can be displayed in the left side of a browser window, while content is displayed in the right. Frames function independently. Content can change in one frame without impacting upon the content in any other frame. In practice, try to restrict the number of frames to no more than two or three.
More Background Consider using frames in a limited fashion.
Usually, the best use for frames is to establish a stable list of navigation links. Because the content of frames function as independent web pages, navigation links can remain accessible, while the content in the other frames may vary. The rules that apply to individual web pages also apply to frame contents. A frameset is a container that holds individual frames within a site. A frameset needs to be named, just as individual pages need to be named.