<ronviers@gmail.com> ha scritto

> Hi,
> One possibility would be to use the Rounded Rectangle tool to place
> the shape you want the effect. Then in layer styles under advanced
> blending set the fill opacity to 0 - this is where the transparency
> shapes layer will come into play. Then enable Outer Glow and under its
> settings change the opacity to 100 and the color to black. You can
> tweak size, spread and profile to get the look you're after.

Hello, thanks for your answer. I have tried but the effect is different from
mine. In my example we have two lines, one black and one white, each one of
1 pixel. The two lines exchange, and create the effect. Infact on the upper
side the black line is above the white line. In the lower side the black
line is under the white line. In your example the lines mantain their
position.

bye Portek