filter:dropshadow(color=
                       aqua
                       black
                       blue
                       fuchsia
                       gray
                       green
                       lime
                       maroon
                       navy
                       olive
                       purple
                       red
                       silver
                       teal
                       yellow
                       white
                       #A0A0A0
                     ,
                   offx=
                       0
                       10
                       20
                       50
                       -10
                       -20
                       -50
                     ,offy=
                       0
                       10
                       20
                       50
                       -10
                       -20
                       -50
                     ,
               positive=
                       0
                       1
                     );