Implementing Frames in XHTML
As in HTML, frames have a singular purpose in XHTML: to give you, the author, the ability to present to the user multiple documents at the same time. This can be done through two methods: fixed frames and floating frames. Fixed frames allow you to divide the screen into regions; subsequently, you indicate which document displays in each region. To do this, you must first create the individ- ual document, then a frameset document that includes the code that details how to divide the window, and instructs the browser which document to display in which frame. Thus, you will be creating n+1 pages. n being the number of documents to be displayed; the plus-one document being the frameset document. So, to create a page that displays three documents, for example, you must create four documents, the three that will display, plus the frameset document. The other method of displaying multiple documents to use a floating frame. In this case you create a document as usual, then create a floati