old_contents: uwdoem.alert = (function() {
  
      var initializedFilters = [];
  
      function setupFilter(setupFun, handle) {
          if (initializedFilters.indexOf(handle) !== -1) {
              // Do nothing, this filter has already been initialized
          } else {
              initializedFilters.push(handle);
              setupFun(handle);
          }
      }
  
      return {
          setupFilter: setupFilter
      };
  
  }());
new_contents: uwdoem.filter = (function() {
  
      var initializedFilters = [];
  
      function setupFilter(setupFun, handle) {
          if (initializedFilters.indexOf(handle) !== -1) {
              // Do nothing, this filter has already been initialized
          } else {
              initializedFilters.push(handle);
              setupFun(handle);
          }
      }
  
      return {
          setupFilter: setupFilter
      };
  
  }());
subject: Fix filter.js.