You can preview documents in target browsers at any time by choosing File > Preview in Browser, or by pressing F12 or Control-F12 (Windows) or Command-F12 (Macintosh) to display the current document in the primary or secondary browser, respectively. You don't have to save the document first. All browser-related functions work, including JavaScript behaviors, document-relative and absolute links, ActiveX controls, Netscape plugins, and so on, provided that you have installed the required plugins or ActiveX controls.
Choose File > Preview in Browser > Edit Browser List to change your primary browser or define a secondary browser. You can define up to 20 browsers for previewing. All the browsers you define appear on the Preview in Browser menu.
Content linked with a root-relative path does not appear when you preview documents in a local browser. This is because browsers don't recognize site roots—servers do. To preview content linked with root-relative paths, put the file on a remote server and view it from there. See also About relative and absolute paths.