UIAlertView*alert=[[UIAlertViewalloc]initWithTitle:@"Incorrect login"message:@"Username or password incorrect"delegate:nilcancelButtonTitle:@"OK"otherButtonTitles:nil,nil];
UIAlertView*alert=[[UIAlertViewalloc]initWithTitle:@"Invalid Book ID"message:@"Book ID must be numeric"delegate:nilcancelButtonTitle:@"OK"otherButtonTitles:nil,nil];