Bug when I use russian names for wiki pages

> When I use Russian names for wiki pages, at editing in the bottom of
> page there is a message: 404 Not Found.
>
>
> Html:
>
>
> <iframe frameborder="1" src="/wiki/Факультет повышения квалификации
> руководителей и специалистов.html?view=attachments&version=2"
> width="530" scrolling="no" height="170"></iframe></td>
>
> </tr>
> </table>
> <div id="id13">
> </div>
> <script type="text/javascript">; new Ajax.PeriodicalUpdater('id13',
> '/wiki/????????? ????????? ???????????? ????????????? ? ????????????.html', {method: 'post', postBody: 'view=edit&version=2&ajaxRequest&ajaxGetElementId=id13', evalScripts: true, frequency: 2});</script>
> </div>
> </div>
>
> Screenshot: notFound.png
>
> Bug fix: WebElement-ajaxCallUrl.st