Missing oScroller

'sDom' : '<"fg-toolbar ui-widget-header ui-corner-tl ui-corner-tr ui-helper-clearfix"fr>t<"fg-toolbar ui-widget-header ui-corner-bl ui-corner-br ui-helper-clearfix"iT>S',

but I have no scroller:

	grid.fixupTable  = function() {
		// fix the height to 10 rows, probably should be a variable
		var settings = grid.fnSettings();
		var scroller = settings.oScroller;
		grid.parent().height(scroller.fnRowToPixels(settings.numRows));
		grid.fnAdjustColumnSizing();
		var oTT = TableTools.fnGetInstance( grid[0] );
		oTT.fnResizeButtons(); 
		if (oSettings.oFeatures.bSort) {
			grid.fnSort(oSettings.aaSorting);
		}
		if (grod.oldTop != 0) {
			var scroller = grid.parent()[0];
			scroller.scrollTop = grid.oldTop;
		}
	}

settings.oScroller; is undefined?

The JavaScript console show no errors of any type