Add isotope, categories for announcement page, sort for announcement

app/helpers/application_helper.rb

@@ -73,6 +73,17 @@ module ApplicationHelper
     {:sort => column, :direction => direction}
   end
 
+  def is_sort_active?(name)
+    res = ''
+    res << ' select' if params[:sort].eql?(name)
+    res << ' active' if params[:sort].eql?(name) && params[:direction].eql?('asc')
+    res
+  end
+
+  def is_sort?(name)
+    ' web-symbol' if params[:sort].eql?(name)
+  end
+
   def add_filter(param_name, value)
     filter = params[:filter] rescue nil
     if filter && filter.has_key(param_name)