When anchor is clicked set the correct condition.

app/assets/javascripts/project_show.js.coffee

@@ -21,10 +21,12 @@ $(document).ready ->
       $("html, body").animate
         scrollTop: $(".navbar").offset().top - $(".navbar").height()
       , 200
-      false
 
-  $("a").click (e) ->
-    unless location.hash is ""
+  $("a").click (event) ->
+    link = event.target
+    isAnchor = link instanceof HTMLAnchorElement
+
+    if (location.hash != "" || isAnchor)
       $("html,body").animate
         scrollTop: $(this).offset().top - $(".navbar").height() - 3
       , 200

app/assets/javascripts/tree_show.js.coffee

@@ -5,10 +5,12 @@ $(document).ready ->
       $("html, body").animate
         scrollTop: $(".navbar").offset().top - $(".navbar").height()
       , 200
-      false
 
-  $("a").click (e) ->
-    unless location.hash is ""
+  $("a").click (event) ->
+    link = event.target
+    isAnchor = link instanceof HTMLAnchorElement
+
+    if (location.hash != "" || isAnchor)
       $("html,body").animate
         scrollTop: $(this).offset().top - $(".navbar").height() - 3
       , 200