here:
<?php
if ( has_post_format( 'image' )) {
?>
<a href="https://wordpress.stackexchange.com/questions/21659/<?php the_permalink() ?>">
<?php $image = catch_that_image();
if( $image ) { ?>
<img src="<?php echo get_template_directory_uri(); ?>/scripts/timthumb.php?src=<?php echo $image; ?>&h=240&w=280" class="index" alt="<?php the_title(); ?>" title="<?php the_title(); ?>" />
<?php } ?>
</a>
<?php
} ?>