code: function(elContainer) {
      SDT.superclass._initContainerEl.call(this, elContainer);
      
      if(this._elContainer) {
          elContainer = this._elContainer; // was constructor input, now is DOM ref
          Dom.addClass(elContainer, DT.CLASS_SCROLLABLE);
          
          // Container for header TABLE
          var elHdContainer = document.createElement("div");
          elHdContainer.style.width = this.get("width") || "";
          elHdContainer.style.backgroundColor = this.get("COLOR_COLUMNFILLER");
          Dom.addClass(elHdContainer, SDT.CLASS_HEADER);
          this._elHdContainer = elHdContainer;
          elContainer.appendChild(elHdContainer);
      
          // Container for body TABLE
          var elBdContainer = document.createElement("div");
          elBdContainer.style.width = this.get("width") || "";
          elBdContainer.style.height = this.get("height") || "";
          Dom.addClass(elBdContainer, SDT.CLASS_BODY);
          Ev.addListener(elBdContainer, "scroll", this._onScroll, this); // to sync horiz scroll headers
          this._elBdContainer = elBdContainer;
          elContainer.appendChild(elBdContainer);
      }
  }
docs: Initializes the DataTable outer container element and creates inner header
  and body container elements.
  
  @method _initContainerEl
  @param elContainer {HTMLElement | String} HTML DIV element by reference or ID.
  @private