ecmascript:

function initialize() {
   CurRot[0] = 0.0;
   CurRot[1] = 1.0;
   CurRot[2] = 0.0;
   CurRot[3] = 0.0;
}

function set_LRotation(bool,time) {
   isLeft  =  bool;
   isRight = !bool;
   if(isLeft) {
      generate_Rotation();
   }
}

function set_RRotation(bool,time) {
   isRight =  bool;
   isLeft  = !bool;
   if(isRight) {
      generate_Rotation();
   }
}

function get_CurRotation(cR,time) {
   CurRot = cR;
}

function generate_Rotation() {
   newRotation = CurRot;
   if(isLeft) {
      if(CurRot[3] < 1.7) {
          newRotation[3] = CurRot[3] + 0.2;
      }
   }
   
   else if(isRight) {
      if(CurRot[3] > -1.7) {
          newRotation[3] = CurRot[3] - 0.2;
      }
   }  
}

    

      
ecmascript:

function initialize() {
   CurOr[0] = 0.0;
   CurOr[1] = 1.0;
   CurOr[2] = 0.0;
   CurOr[3] = 0.0;
}

function set_Elevation(bool,time) {
   isUp   =  bool;
   isDown = !bool;
   if(isUp) {
      generate_Rotation();
   }
}

function set_Descendance(bool,time) {
   isDown =  bool;
   isUp   = !bool;
   if(isDown) {
      generate_Rotation();
   }
}

function get_CurOrientation(cR,time) {
   CurOr = cR;
}

function generate_Rotation() {
   newOrientation = CurOr;
   if(isUp) {
      if(CurOr[3] < 0.45) {
          newOrientation[3] = CurOr[3] + 0.05;
      }
   }
   
   else if(isDown) {
      if(CurOr[3] > 0.05) {
          newOrientation[3] = CurOr[3] - 0.05;
      }
   }  
}