diff --git a/scribble-lib/scribble/base.rkt b/scribble-lib/scribble/base.rkt
index 4463c7d51f..3b68a35e8c 100644
--- a/scribble-lib/scribble/base.rkt
+++ b/scribble-lib/scribble/base.rkt
@@ -669,7 +669,7 @@
 (define (margin-note #:left? [left? #f] . c)
   (make-nested-flow
    (make-style (if left? "refparaleft" "refpara")
-               '(command never-indents))
+               (cons (alt-tag "aside") '(command never-indents)))
    (list
     (make-nested-flow
      (make-style (if left? "refcolumnleft" "refcolumn")
diff --git a/scribble-lib/scribble/html-render.rkt b/scribble-lib/scribble/html-render.rkt
index fefb285bd0..90d1412a3d 100644
--- a/scribble-lib/scribble/html-render.rkt
+++ b/scribble-lib/scribble/html-render.rkt
@@ -877,6 +877,7 @@
                    ,(scribble-css-contents scribble-css
                                            (lookup-path scribble-css alt-paths) 
                                            dir-depth)
+                   (script ([type "text/javascript"]) "\ndocument.createElement('aside');\n")
                    ,@(map (lambda (style-file)
                             (if (or (bytes? style-file) (url? style-file))
                                 (scribble-css-contents style-file #f dir-depth)