[Typo3] In Typo Script: How could I define the 2 level image as half trancparency ?

[stephan]

additional information:
the 2 level part dont have to be an image. It can also be only an area, 
surface with one color. But this color should be only with 50 % covering the 
1 level images.

"stephan" <winter3 at bluewin.ch> schrieb im Newsbeitrag 
news:mailman.1.1134056906.30339.typo3-english at lists.netfielders.de...
>      BILDMAIN.file {
>         10 = IMAGE
>         10.file = fileadmin/images/saentismain.jpg
>      }
>
>      BILDMAIN.file {
>         20 = IMAGE
>         20.offset = 100, 0
>         20.file = fileadmin/images/menu.png
>         }
>
> Thank you
>