integer on;

default
{
    touch_start(integer total_number)
    {
        if(on)
        {
            on = FALSE;
            llSetPrimitiveParams([PRIM_GLOW,ALL_SIDES,0.0]);

        }
        else
        {
            on = TRUE;
            llSetPrimitiveParams([PRIM_GLOW,ALL_SIDES,0.1]);

        }
    }
}