Blinking leds

Hi!
I need help with my Arduino code. I built my Bluetooth car... Everything is ok but one thing is not. I want to blink leds when servos are turned to left or right - i want a blinkers. I did only it, when servos are turn to side - blinker only lights, not blink. Here is my code : (I just now translated code to english (not comments)... because i am from Slovakia - sorry for my bad english - Red color is marked what i want from You to change.) THANKS

(code tags added by moderator)

#include <Servo.h>

const int forward = 2; 	  // Pin 2 - Dopredu
const int reverse= 3;	  // Pin 3 - Dozadu

Servo turn;          // Servo na vytá?anie predných kolies

const int front_lights = 5;	  // Pin 5  - Predné svetlá
const int rear_lights = 6;         // Pin 6  - Zadné svetlá 
const int brake_lights = 7;	  // Pin 7  - Brzdové svetlá
const int long_lights = 8;	  // Pin 8  - ?ia?kové svetlá
const int reverse_lights = 9;         // Pin 9 - Cúvacie svetlá
const int left_blinker = 10;       // Pin 10 - ?avá smerovka
const int right_blinker = 11;       // Pin 11 - Pravá smerovka

char val;  // Premenná pre príjímanie dát zo sériového portu

void setup() {

  // Nastavenie pinov
  pinMode(forward, OUTPUT);
  pinMode(reverse, OUTPUT);
  turn.attach(4);
  turn.write(75);
  pinMode(front_lights, OUTPUT);
  pinMode(back_lights, OUTPUT);
  pinMode(brake_lights, OUTPUT);
  pinMode(long_lights, OUTPUT);
  pinMode(reverse_lights, OUTPUT);
  pinMode(left_blinker, OUTPUT);
  pinMode(right_blinker, OUTPUT);
  
  Serial.begin(9600); 	// Za?atie sériovej komunikácie na 9600bps
}

// ?ítaj sériový port a prijímaj príkazy
void commands() {
  if (Serial.available()) {
    val = Serial.read();
  }
    if (val == 'f') { // 
      go_forward();
    } else if (val == 'z') { 
      stop_go_forward();
    } else if (val == 't') {
      go_turbo();
    } else if (val == 'x') { 
      stop_turbo();
    } else if (val == 'b') { 
      go_back();
    } else if (val == 'y') { 
      stop_go_back();
    } else if (val == 'l') { 
      go_right();
    } else if (val == 'r') { 
      go_left();
    } else if (val == 'v') { 
      stop_turn();
    } else if (val == 's') { 
      stop_car();
    } else if (val == 'a') { 
      lightsON();
    } else if (val == 'c') { 
      lightsOFF();
    } else if (val == 'd') { 
      long_lightsON();
    } else if (val == 'e') { 
      long_lightsOFF();
    }
  
}

void loop() { 
commands();
}


// Akcia dopredu
void go_forward() {
  analogWrite(forward, 130);
  digitalWrite(brake_lights, LOW);
  
}

// STOP Akcie dopredu
void stop_go_forward() {
  digitalWrite(forward, LOW);
  digitalWrite(brakelights, HIGH);
}

void go_turbo() {
  digitalWrite(forward, HIGH);
  digitalWrite(brake_lights, LOW);
}

void stop_turbo()  {
  digitalWrite(forward, LOW);
  digitalWrite(brake_lights, HIGH);
}

// Akcia dozadu
void go_back() {
  digitalWrite(reverse, HIGH);
  digitalWrite(reverse_lights, HIGH);
  digitalWrite(brake_lights, LOW);
}

// STOP Akcie dozadu
void stop_go_back() {
  digitalWrite(reverse, LOW);
  digitalWrite(reverse_lights, LOW);
  digitalWrite(brake_lights, HIGH);
}

[color=red]// Akcia do?ava
void go_left() {
  turn.write(42);
  digitalWrite(left_blinker, HIGH);
 
}
 
// Akcia doprava
void go_right() {
  turn.write(117);
  digitalWrite(right_blinker, HIGH);
 } [/color]
  

// STOP Akcie zatá?ania
void stop_turn() {
  turn.write(77);
  digitalWrite(left_blinker, LOW);
  digitalWrite(right_blinker, LOW);
 }

// Stop car 
void stop_car() {
  digitalWrite(forward, LOW);
  digitalWrite(reverse, LOW); 
  
  digitalWrite(brake_lights, HIGH);
}

// SvetláON
void lightsON() {
  digitalWrite(front_lights, HIGH);
  digitalWrite(rear_lights, HIGH);
}

// SvetláOFF
void lightsOFF() {
  digitalWrite(front_lights, LOW);
  digitalWrite(rear_lights, LOW);
}

// Dia?kové svetláON
void long_lightsON() {
  digitalWrite(long_lights, HIGH);
}

// ?ia?kové svetláOFF
void long_lightsOFF() {
  digitalWrite(long_lights, LOW);
}