Two LEDs Running at Different Speeds

int ledOnePin = 13;
int ledTwoPin = 12;

void setup() {               
  pinMode(ledOnePin , OUTPUT); 
  pinMode(ledTwoPin , OUTPUT); 
}

void loop() {
    initializeLed(ledOnePin , 500);
    initializeLed(ledTwoPin, 1000);
}

void initializeLed(int led, int time) {
  digitalWrite(led, HIGH);
  delay(time);
  digitalWrite(led, LOW);
  delay(time);
}