How to add an image to Column Header in Flex DataGrid

After some looking around , i found out that i didn't see an easy example on how to add images to Column Headers in Flex Data Grid

Well ,this is not too complected to do in Flex3
When defining a DataGridColum , it is possible to specify a HeaderRenderer. In our case the header renderer will simply be an image.
See code below:

See full source code here: