replace javascript:void with preventDefault

app/assets/javascripts/dashboard.js.coffee

@@ -3,7 +3,8 @@ $ ->
 
 dashboardPage = ->
   Pager.init 20, true
-  $(".event_filter_link").bind "click", ->
+  $(".event_filter_link").bind "click", (event) ->
+    event.preventDefault()
     toggleFilter $(this)
     reloadActivities()
     

app/helpers/events_helper.rb

@@ -29,7 +29,7 @@ module EventsHelper
                end
 
     content_tag :div, class: "filter_icon #{inactive}" do
-      link_to 'javascript:void(0)', class: 'has_tooltip event_filter_link', id: "#{key}_event_filter", 'data-original-title' => tooltip do
+      link_to dashboard_path, class: 'has_tooltip event_filter_link', id: "#{key}_event_filter", 'data-original-title' => tooltip do
         image_tag "event_filter_#{key}.png"
       end
     end