code: function (oColumn, elTd, index, isLast) {
      var oColumnSet = this._oColumnSet;
      
      // Set the TD's accessibility headers
      var allHeaders = oColumnSet.headers,
          allColHeaders = allHeaders[index],
          sTdHeaders = "",
          sHeader;
      for(var j=0, headersLen=allColHeaders.length; j < headersLen; j++) {
          sHeader = this._sId + "-th-" + allColHeaders[j] + ' ';
          sTdHeaders += sHeader;
      }
      elTd.headers = sTdHeaders;
      
      // Class the TD element
      var aAddClasses = [];
      if(index === 0) {
          aAddClasses[aAddClasses.length] = DT.CLASS_FIRST;
      }
      if(isLast) {
          aAddClasses[aAddClasses.length] = DT.CLASS_LAST;
      }
      elTd.className = this._getColumnClassNames(oColumn, aAddClasses);
  
      // Class the liner element
      elTd.firstChild.className = DT.CLASS_LINER;
  
      // Set Column width for fallback cases
      if(oColumn.width && DT._bDynStylesFallback) {
          // Validate minWidth
          var nWidth = (oColumn.minWidth && (oColumn.width < oColumn.minWidth)) ?
                  oColumn.minWidth : oColumn.width;
          elTd.firstChild.style.overflow = 'hidden';
          elTd.firstChild.style.width = nWidth + 'px';
      }
      
      return elTd;
  }
docs: Formats a basic TD element.
  @method _formatTdEl
  @param oColumn {YAHOO.widget.Column} Associated Column instance.
  @param elTd {HTMLElement} An unformatted TD element.
  @param index {Number} Column key index.
  @param isLast {Boolean} True if Column is last key of the ColumnSet.
  @return {HTMLElement} A formatted TD element.
  @private