code: function(sCategory) {
          if(this._elFt) {
              var filter = make("span",{ className: "yui-log-filtergrp" }),
                  check  = make("input", {
                      id: "yui-log-filter-" + sCategory + this._sName,
                      className: "yui-log-filter-" + sCategory,
                      type: "checkbox",
                      category: sCategory
                  }),
                  label  = make("label", {
                      htmlFor: check.id,
                      className: sCategory,
                      innerHTML: sCategory
                  });
              
  
              // Subscribe to the click event
              Event.on(check,'click',this._onCheckCategory,this);
  
              this._filterCheckboxes[sCategory] = check;
  
              // Append el at the end so IE 5.5 can set "type" attribute
              // and THEN set checked property
              filter.appendChild(check);
              filter.appendChild(label);
              this._elCategoryFilters.appendChild(filter);
              check.checked = true;
          }
      }
docs: Creates the UI for a category filter in the LogReader footer element.
  
  @method _createCategoryCheckbox
  @param sCategory {String} Category name.
  @private