presentModalViewController和uiwebview出现问题。

about *ab = [[about alloc] initWithNibName:@\"about\" bundle:[NSBundle mainBundle]];
ab.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
[self presentModalViewController: ab animated: YES];
[ab release];

-(BOOL) webView:(UIWebView *)inWeb shouldStartLoadWithRequest:(NSURLRequest *)inRequest navigationType:(UIWebViewNavigationType)inType {
if (inType == UIWebViewNavigationTypeLinkClicked) {
    [[UIApplication sharedApplication] openURL:[inRequest URL]];
    return NO;
}

return YES;
}