open_safari.m

    UIButton* button = [[[UIButton alloc] initWithFrame:CGRectMake(150, 240, 100, 30)] autorelease];
    [button setBackgroundImage:[UIImage imageNamed:@"btn.png"]
                          forState:UIControlStateNormal];
    [button setBackgroundImage:[UIImage imageNamed:@"btn_on.png"]
                          forState:UIControlStateHighlighted];  
    [button addTarget:self action:@selector(button_pushed) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];


- (IBAction) button_pushed {
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"" message:@"Safariを起動して地図を表示します。よろしいですか？" delegate:self cancelButtonTitle: nil otherButtonTitles:@"Safariを起動", @"キャンセル", nil];
    [alertView show];
    [alertView release];    
}

// AlertViewDelegate
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
	if(buttonIndex == 0 ) {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://igarashikuniaki.net/tdiary/"]];
	}
}