img_view = [[UIImageView alloc]init];
img_view.autoresizingMask = UIViewAutoresizingFlexibleWidth;
img_view.frame = CGRectMake(0,0,130, 75);
activityIndicator = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge] autorelease];
[img_view addSubview: activityIndicator];
activityIndicator.center = CGPointMake(50,30);
NSOperationQueue *queue = [NSOperationQueue new];
NSInvocationOperation *operation = [[NSInvocationOperation alloc]
initWithTarget:self
selector:@selector(loadImage:)
object:[[xmlParser data1] objectAtIndex:indexPath.row]];
[queue addOperation:operation];
[operation release];
[cell.contentView addSubview:img_view];
-(void)loadImage:(Book *)book
{
[activityIndicator startAnimating];
NSString *imgurl=[book image_url];
NSURL *url=[[NSURL alloc]initWithString:imgurl];
NSData *img=[[NSData alloc]initWithContentsOfURL:url];
UIImage *image=[UIImage imageWithData:img];
img_view.image=image;
[activityIndicator stopAnimating];
}