-(void)useCustomBackButton
{
    UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
    backButton.frame = CGRectMake(0, 0, 63, 44);
    [backButton setImage:[UIImage imageNamed:@"Btn_Back"] forState:UIControlStateNormal];
    [backButton addTarget:self action:@selector(backButtonPressed) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *backBarButton = [[UIBarButtonItem alloc] initWithCustomView:backButton];

    self.navigationItem.leftBarButtonItem = backBarButton;

    [backBarButton release];
}