Xcode UIWEBVIEW download , save HTML file and show

I want to download a page and show this in WEBVIEW local, but the images are missing. The images are only shown, when I'm online, in offline mode they are missing. How can I solve this? This is the code I used up until now:

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { NSURL *url = [NSURL URLWithString:@"http://livedemo00.template-help.com/wt_37587/index.html"]; //[WEBVIEW loadRequest:reqURL]; // Determile cache file path NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *filePath = [NSString stringWithFormat:@"%@/%@", [paths objectAtIndex:0],@"index.html"]; // Download and write to file NSData *urlData = [NSData dataWithContentsOfURL:url]; [urlData writeToFile:filePath atomically:YES]; // Load file in UIWebView [WEBVIEW loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]]]; [super viewDidLoad]; }