code: function(sHTML, sClassName) {
      var elCell = this._elMsgTd;
      if(lang.isString(sHTML)) {
          elCell.firstChild.innerHTML = sHTML;
      }
      if(lang.isString(sClassName)) {
          elCell.className = sClassName;
      }
  
      this._elMsgTbody.style.display = "";
  
      this.fireEvent("tableMsgShowEvent", {html:sHTML, className:sClassName});
      YAHOO.log("DataTable showing message: " + sHTML, "info", this.toString());
  }
docs: Displays message within secondary TBODY.
  
  @method showTableMessage
  @param sHTML {String} (optional) Value for innerHTMlang.
  @param sClassName {String} (optional) Classname.