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If you have a JavaScript-capable browser, and scripting is already enabled, here are a couple of possibilities for what went wrong...
Did you open a link in a new tab or window? If you reached this page by trying to open a hyperlink in a new tab or a new window (by Shift-Clicking or Ctrl-Clicking on the link, for example), try going back and clicking on the link normally. Tip: many of our "Help" links automatically open a pop-up window, to avoid interrupting what you were doing, so there's no need to explicitly open a new tab/window for these.
There might be an error in one of our scripts. If a JavaScript error occurs in a script link, the browser will sometimes act as though there's no script at all, which has the effect of taking you to this page as though JavaScript weren't enabled. This might indicate a bug in the page. You might try going back and reloading the page, in case it didn't load properly; if the problem persists, you can contact us to let us know about it.