popup.js.coffee in unpoly-rails-0.26.0

- old
+ new

@@ -123,9 +123,11 @@
       when "top-left"
         left: linkBox.left
         bottom: linkBox.top
       else
         u.error("Unknown position option '%s'", position)
+    if u.isFixed($link)
+      css['position'] = 'fixed'
     $popup = $('.up-popup')
     $popup.attr('up-position', position)
     $popup.css(css)
     ensureInViewport($popup)
 