Coldfusion 9 CFGRID Question

I have used the code below to add a new bar to the bottom of the grid. This gives the user some good information about the records. I want to start to use some of the editable grids that allow records to be inserted and deleted. This works great for some simple tables. But there are 3 buttons (insert/save/delete) that are on the bottom bar that need to be there they are not on the new bar I create. Does anyone know the EXT 3.2 commands to add the buttons to this new bar.

Thank you in advance.

<script type="text/javascript">
function MyDocumentsInit(){
	grid = ColdFusion.Grid.getGridObject("MyDocumentsGrid");
	var gridHead = grid.getTopToolbar(); //note: Ext JS 3.2 change 
    var gridFoot = grid.getBottomToolbar(); //note: Ext JS 3.2 change 
 	var ds = grid.getStore(); //note: Ext JS 3.2 change 
	var tbar = grid.getTopToolbar();
 	
	// this shows the display message by default in new toolbar. (does not work with insert grids) 
 	var bbar = Ext.DomHelper.overwrite(grid.bbar,{tag:'div',id:Ext.id()},true);	 
   	    gbbar = new Ext.PagingToolbar({
		renderTo:bbar,
		store: ds,
	  	pageSize:15, //number of records displayed in grid
	  	displayInfo:true, // change this to false, if you dont want info displayed
	  	displayMsg:'Displaying records {0} - {1} of {2}',
	   	emptyMsg:"No records to display"
	   	});
    // add a custom combobox to the grid header - this combobox lets you choose the number of rows you want to see
	 cb = new Ext.form.ComboBox({
			id:"pagingCombo",
			emptyText:"Rows per page",
			mode:"local",
			triggerAction:"all",
			displayField:"text",
			valueField:"value",
  		       store:new Ext.data.SimpleStore({
            fields: ["value", "text"],
            data: [
               ["5","5 rows per page"],
               ["10","10 rows per page"],
               ["15","15 rows per page"],
               ["20","20 rows per page"],
			   ["30","30 rows per page"],
			   ["40","40 rows per page"],
			   ["50","50 rows per page"],
			   ["75","75 rows per page"],
			   ["100","100 rows per page"]
            	]
  				})
			});
			tbar.addButton({xtype: 'tbfill'}); //puts row selector to the right
			tbar.add(cb); //adds to toolbar
         	ColdFusion.Grid.showTopToolbar("MyDocumentsGrid"); //show the toolbar
			//code below listens for select to change and then reconfigures grid
			cb.addListener("select",function(combo,record,index){
				var numRows = parseInt(record.data.value);
				gbbar.pageSize = parseInt(numRows);
 				ds.reload({params:{start:0,limit:gbbar.pageSize}});
 				gbbar.onClick("refresh");
			});

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