       return SPAN null
 
     @local.current_value ||= subdomain.customizations
+    @local.customization_filter ||= ''
 
     DIV 
       style: 

            width:  if @local.compare_to == '' then '22%' else '38%'
            verticalAlign: 'top'
            marginLeft: '2%'

          DIV 
            style: 

                @local.compare_to = ev.target.value 
                save @local

              for sub, id of sub_ids when @local.customization_filter.length == 0 || id.toLowerCase().indexOf(@local.customization_filter.toLowerCase()) > -1
                OPTION 
                  value: sub
                  sub 
