m.Reader

This extension adds a button, which opens a popup window, where you can choose from several sites to view. But the real power lies in the "preferences" page, where you can: change Size and Style of Menu Page (the one where you select which site to view); adjust Individual Site Pages, and for each of them you can change: URL, title and icon of corresponding position in Menu Page, size of the popup window when viewing this page, and mode: how this site "feels" about iframes. When adding a new Site Page, first a window appears, that asks you about an URL of a page that you want to add. After that, this extension fetches it from server, analyses server response and substitutes values for new Site Page parameters.