Alt prob code snippet

<section id="latestnews">

	<h2><a class="homepagetitle" href="/news/">News</a></h2>

	<div class="newscol">

		<?php query_posts('category_name=news&showposts=6'); ?>

		<?php while (have_posts()) : the_post(); ?>

			<div class="newsbox">
				<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>">
<?php if(get_video_thumbnail()!=null) { echo '<img src="'.get_video_thumbnail().'" alt="'.the_title().'" class="video-thumbnail">'; } elseif(has_post_thumbnail()) { the_post_thumbnail(); }; ?>
<?php if(get_video_thumbnail()!=null) echo '<img src="/img/play-button.png" alt="play video" width="40px" class="overlay">'; ?>
				</a>
				<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><h3><?php the_title(); ?></h3></a>
				<?php the_excerpt(); ?>
			</div>

		<?php endwhile;?>

		<?php rewind_posts(); ?>

	</div><!-- .newscol -->

</section>