Split Browser for FireFox is a plugin that splits the content area of the browser window as you like. It will help you in various cases. For example, to compare multiple webpages, to show a calendar always, and so on.
There is some ways to split window.
* Choose the “Split Browser to” menu in the context menu.
* Choose the “Load in Split Browser” menu in the context menu on link.
* Click popup-button on top/bottom/left/right edges of the content area.
* Drop links, bookmarks, etc. to popup-button on top/bottom/left/right edges of the content area while dragging.
You can split browsers over and over. Status of split browsers are saved, and automatically restored on the next startup.