code: function(elCellLabel, oColumn, oSortedBy) {
      var sKey = oColumn.getKey();
      var sLabel = lang.isValue(oColumn.label) ? oColumn.label : sKey;
  
      // Add accessibility link for sortable Columns
      if(oColumn.sortable) {
          // Calculate the direction
          var sSortClass = this.getColumnSortDir(oColumn, oSortedBy);
          var bDesc = (sSortClass === DT.CLASS_DESC);
  
          // This is the sorted Column
          if(oSortedBy && (oColumn.key === oSortedBy.key)) {
              bDesc = !(oSortedBy.dir === DT.CLASS_DESC);
          }
  
          // Generate a unique HREF for visited status
          var sHref = this.getId() + "-href-" + oColumn.getSanitizedKey();
          
          // Generate a dynamic TITLE for sort status
          var sTitle = (bDesc) ? this.get("MSG_SORTDESC") : this.get("MSG_SORTASC");
          
          // Format the element
          elCellLabel.innerHTML = "<a href=\"" + sHref + "\" title=\"" + sTitle + "\" class=\"" + DT.CLASS_SORTABLE + "\">" + sLabel + "</a>";
      }
      // Just display the label for non-sortable Columns
      else {
          elCellLabel.innerHTML = sLabel;
      }
  }
docs: Outputs markup into the given TH based on given Column.
  
  @method DataTable.formatTheadCell
  @param elCellLabel {HTMLElement} The label SPAN element within the TH liner,
  not the liner DIV element.
  @param oColumn {YAHOO.widget.Column} Column instance.
  @param oSortedBy {Object} Sort state object literal.