[flexcoders] Icon for Button

[markgoldin_2000]

I want to have a button in one of columns in the DataGrid. This button 
will delete rows on its click. I am adding the button to dataGrid as a 
itemRenderer. I am extending class Button:
public class deleteRowGrid extends Button
        {
                public function deleteRowGrid()
                {
                        super();
                        styleName = "DeleteRow";
                }
                
        }
I am using styleName to set an icon for the button. "DeleteRow" style 
is declared in the main application. When I run my code I have a button 
in the column but with no icon. Any idea why?

Thanks