[flexcoders] Displaying DataGrid totals

[baiju]

I am new to flex 2 and was wondering if anyone have a custom component
to display the totals of DataGridColumn in the last row.
I am using a custom component myself as shown in the following example
but was looking for a cleaner implementation as this one is a bit buggy.

<comm:FooterDataGrid  height="360" dataProvider="{productlist}">
<comm:columns>
  <comm:FooterDataGridColumn headerText="price" dataField="price">
    <mx:DataGridColumn headerText="totalPrice"/>
  </comm:FooterDataGridColumn>
  <comm:FooterDataGridColumn headerText="quantity" dataField="qty">
    <mx:DataGridColumn headerText="totalQuantity"/>
  </comm:FooterDataGridColumn>
</comm:columns>                 
</comm:FooterDataGrid>

Where, FooterDataGrid extends DataGrid and FooterDataGridColumn
extends DataGridColumn.

Thank you,
Baiju.