Dreamweaver enables you to view and edit all of the documents associated with a set of frames in one Document window. This approach enables you to see approximately how the framed pages will appear in a browser as you edit them. However, some aspects of this approach can be confusing until you get used to them. In particular, each frame displays a separate HTML document. Even if the documents are empty, you must save them all before you can preview them (because the frameset can be accurately previewed only if it contains the URL of a document to display in each frame).
To ensure that your frameset appears correctly in browsers, follow these general steps: