Fix structure title (page slide)

app/assets/javascripts/basic/orbit_js_1.0.1.js

@@ -487,7 +487,7 @@ function openSlide() {
     $openSlide.each(function() {
         if($(this).hasClass('view-page')) {
             $(this).pageslide({ W: $pageslideW, iframe: true });
-        } else if($('#items').length) {
+        } else if($('.item-groups').length) {
             $(this).pageslide({ W: 324 });
         } else {
              $(this).pageslide();