Making a glTriangle visible on both sides

Hello,

How do I make a glTriangle visible on both Front and Back side? I have tried applying material on both sides but it only reflects light on the front side.

Thanks
/Jonas Forssell, Gothenburg, Sweden

[H.Stony]

glLighModeli(GL_LLIGHT_MODEL_TWO_SIDe,GL_TRUE)

Excellent

Thanks!

/Jonas