Image commands icons in IE6

Hello.

I have a problem with the ImageCommand icon in IE6. The icon does not display when the column has a rendering function attached, even if the function has a emty body (do nothing). ¿Is this a bug or there is any consideration about IE6 and ImageCommands?

Thanks in advance.

Code:

---


<ext:Column meta:resourcekey="colDescDetallada" DataIndex="DescripcionDetallada" Sortable="true">
 <Commands>
  <ext:ImageCommand CommandName="Edit" Icon="NoteEdit">
  <ToolTip Text="Editar" />
  </ext:ImageCommand>
 </Commands>
 <Renderer Fn="DescripcionDetallada_Renderer" />
</ext:Column>

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