You could install Ubiquity, which is a Firefox “experimental” plugin. Once you have it installed, you simply Alt+A (Select All) the page, run the hotkey, and the text is computer-translated and actually put back into place where the russian (or whatever language) text was before. Granted, it’s not much better than Google Translate, but it’s a start, and you can simply browse the page and go around; no jumping back and forth between Google and your site.