Same pagination for Two UIScrollview
-(void)scrollViewDidScroll:(UIScrollView *)sender {
// Switch the indicator when more than 50% of the previous/next page is visible
CGFloat pageWidth = self.scrollGalery.frame.size.width;
currentPage = floor((self.scrollGalery.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
CGFloat pageWidthBack = self.scrollGaleryBack.frame.size.width;
currentPageBack = floor((self.scrollGaleryBack.contentOffset.x - pageWidthBack / 2) / pageWidthBack) + 1;
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
    [self updateDisplay];
}
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
}

-(void) onRetrieveDisplayObjects:(UIView *)view
{
    [super onRetrieveDisplayObjects:view];

    self.scrollGalery = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 40, screenWidth, screenHeight-40)];
    self.scrollGalery.contentSize = CGSizeMake(1000, self.scrollGalery.frame.size.height);
    self.scrollGalery.pagingEnabled = YES;
    self.scrollGalery.backgroundColor = [UIColor clearColor];
    self.scrollGalery.showsHorizontalScrollIndicator = NO;
    self.scrollGalery.delegate = self;
    [self.view addSubview:self.scrollGalery];

    self.scrollGaleryBack= [[UIScrollView alloc] initWithFrame:CGRectMake(0, 40, 480, 280)];
    self.scrollGaleryBack.contentSize = CGSizeMake(480, 280);
    self.scrollGaleryBack.pagingEnabled = YES;
    self.scrollGaleryBack.backgroundColor = [UIColor clearColor];
    self.scrollGaleryBack.showsHorizontalScrollIndicator = NO;
    self.scrollGaleryBack.delegate = self;
    [self.view addSubview:self.scrollGaleryBack];

    scrollGalery.hidden = NO;
    scrollGaleryBack.hidden = YES;

    self.forward = [MyLittleUtils newButton:@"  "
                                  andTarget:self.responderRedirector
                                  andAction:@selector(onForward:) andBackground:@"forward"];
    forward.frame = CGRectMake(screenWidth-50, screenHeight-35, 50, 25);
    [self.view addSubview:self.forward];

    self.backward = [MyLittleUtils newButton:@"  "
                                   andTarget:self.responderRedirector
                                   andAction:@selector(onBackward:) andBackground:@"backward"];
    backward.frame = CGRectMake(0, screenHeight-35, 50, 25);
    backward.hidden = YES;
    [self.view addSubview:self.backward];

- (void) onFulfillDisplayObjects
{
    [super onFulfillDisplayObjects];

    NSArray * listeIllustrations = [self.businessObject getObject];
    float x = 0;
    float z = 0;
    for (Illustration * illustration in listeIllustrations)
    {
        NSString * labelIllustration = [NSString stringWithFormat:@"%@", illustration.label];
        NSString * urlIllustration = [NSString stringWithFormat:@"%@", illustration.url];
        labelU.text = labelIllustration;

        UIImageView * theImage = [[UIImageView alloc] initWithFrame:CGRectMake(x, 20, screenWidth, self.scrollGalery.frame.size.height-20-60)];
        theImage.backgroundColor = [UIColor clearColor];
        //theImage.contentMode = UIViewContentModeScaleToFill;
        theImage.contentMode = UIViewContentModeScaleAspectFit;
        //theImage.contentMode = UIViewContentModeScaleToFill;
        [[SnSImageViewDownloadImageOperation alloc] initAndEnqueueWith:YES
                                                             andTarget:theImage
                                                                andUrl:urlIllustration
                                                     andTemporaryImage:nil];
        [self.scrollGalery addSubview:theImage];

        UITextView * textView = [[UITextView alloc] initWithFrame:CGRectMake(x+40, 400, screenWidth-80, 60)];
        textView.backgroundColor = [UIColor clearColor];
        textView.textAlignment = UITextAlignmentCenter;
        textView.font = FONT_DEFAULT(12);
        textView.text = illustration.copy;
        textView.editable = NO;
        [self.scrollGalery addSubview:textView];

        UIImageView * theImage2 = [[UIImageView alloc] initWithFrame:CGRectMake(z, 0, 480, 280)];
        theImage2.backgroundColor = [UIColor clearColor];

        if ([illustration.orientation isEqualToString:@"1"]) {
            NSString * urlIllustrationb1 = [NSString stringWithFormat:@"%@", illustration.url2];
            [[SnSImageViewDownloadImageOperation alloc] initAndEnqueueWith:YES
                                                                 andTarget:theImage2
                                                                    andUrl:urlIllustrationb1
                                                         andTemporaryImage:nil];
        }
        if ([illustration.orientation isEqualToString:@"0"]) {
            NSString * urlIllustrationb2 = [NSString stringWithFormat:@"%@", illustration.url];
            [[SnSImageViewDownloadImageOperation alloc] initAndEnqueueWith:YES
                                                             andTarget:theImage2
                                                                andUrl:urlIllustrationb2
                                                     andTemporaryImage:nil];
        }

        [self.scrollGaleryBack addSubview:theImage2];

        x += screenWidth;
        z += 480;
    }
self.scrollGalery.contentSize = CGSizeMake(x, screenHeight-navigationBarHeight);
self.scrollGaleryBack.contentSize = CGSizeMake(z, 320-navigationBarHeight);

- (void) onForward:(id)sender
{
    CGFloat pageWidth = self.scrollGalery.frame.size.width;
    CGFloat pageWidthBack = self.scrollGaleryBack.frame.size.width;
    currentPage++;
    currentPageBack++;
    [self.scrollGalery setContentOffset:CGPointMake(currentPage*pageWidth, 0) animated:YES];
    [self.scrollGaleryBack setContentOffset:CGPointMake(currentPageBack*pageWidthBack, 0) animated:YES];
    [self updateDisplay];
}

- (void) onBackward:(id)sender
{
    CGFloat pageWidth = self.scrollGalery.frame.size.width;
    CGFloat pageWidthBack = self.scrollGaleryBack.frame.size.width;
    currentPage--;
    currentPageBack--;
    [self.scrollGalery setContentOffset:CGPointMake(currentPage*pageWidth, 0) animated:YES];
    [self.scrollGaleryBack setContentOffset:CGPointMake(currentPageBack*pageWidthBack, 0) animated:YES];
    [self updateDisplay];
}