The status bar displays the Document window’s current dimensions (in pixels). To design a page that looks its best at a specific size, you can adjust the Document window to any of the predetermined sizes, edit those predetermined sizes, or create new sizes. To resize the Document window to a predetermined size:
Select one of the sizes from the Window Size pop-up menu at the bottom of the Document window
NOTE
In Windows, you can maximize a Document window so that it fills the entire document area of the integrated window. You can’t resize a Document window when it is maximized. The window size shown reflects the inside dimensions of the browser window, without borders; the monitor size is listed in parentheses. For example, you would use the size "536 x 196 (640 x 480, Default)" if your visitors are likely to be using Microsoft Internet Explorer or Netscape Navigator in their default configurations on a 640 x 480 monitor.
TIP
For less precise resizing, use your operating system’s standard methods of resizing windows, such as dragging the lower-right corner of a window.