How to load an image in flash build?

This code worked in editor,EXE and webplayer but not worked in Flash:

 public string url = "http://images.earthcam.com/ec_metros/ourcams/fridays.jpg";   
 
  IEnumerator Start() {   
 
  WWW www = new WWW(url);   
 
  yield return www;    
 
  renderer.material.mainTexture = www.texture;    
 
  }