function description() { $button = HTML::input(array('type' => 'submit', 'value' => _("compare revisions"), 'class' => 'wikiaction')); $js_desc = $no_js_desc = _RecentChanges_HtmlFormatter::description(); $js_desc->pushContent("\n", _("Check any two boxes to compare revisions.")); $no_js_desc->pushContent("\n", fmt("Check any two boxes then %s.", $button)); return IfJavaScript($js_desc, $no_js_desc); }