newTextField background transparent

hello to all…
is that possible to have a newTextField with no background or transparent background…
Suppose i have and png image with the form of an input but with shadows and stuff like that and i only need to place an input just in front of that image with no background borders…
Regards,
B [import]uid: 17035 topic_id: 5279 reply_id: 305279[/import]