[flexcoders] itemrenderer rollover event seems no sensitive

[Fu Di]

hello everyone

i wrote a itemrenderer in datagird  which extends DataGridItemRenderer, and i 
listened MouseEvent.ROLL_OVER and MouseEvent.ROLL_OUT events. but when the 
mouse rollover the  itemrenderer it is not sensitive, may be the mouse just 
over the  itemrenderer's character 
it will be triggered.    

 thanks 


foodyi