Walkthrough Shaders

[gotcha8903]

I need to use a visible non-solid shader, how do I make one?

It will be like the part of the last level in JO where if u follow Desann's shadow you fall into a bottomless pit.
-thanks

[WadeV1589]

textures/mymap/mytexture
{
surfaceparm trans
surfaceparm nonsolid
{
map $lightmap
}
{
map textures/mymap/mytexture
blendFunc GL_DST_COLOR GL_ZERO
}
}