default 
{

state_entry() { 

llSetTimerEvent(1);

}


timer()
{

vector sun = llGetSunDirection();
integer turnLightsOn = (sun.z < 0);

integer i;
for (i=1; i<=llGetNumberOfPrims(); i++)
{
integer isOn=turnLightsOn*((integer)(llFrand(1.0)>0.5));
 
 llSetLinkPrimitiveParams(i, [ PRIM_GLOW, ALL_SIDES, 0.2* isOn, PRIM_FULLBRIGHT,ALL_SIDES,isOn]);
}


}


}