<?php if ( has_post_thumbnail()) : the_post_thumbnail(); 
	elseif ($thumbnail = get_post_meta($post->ID, 'resim', true) != '') : ?>
	<img src="<?php echo $thumbnail;?>" alt="<?php the_title(); ?>" title="<?php the_title(); ?>" width="250" height="220" /> 
<?php else : ?>
	<img src="<?php bloginfo('template_url'); ?>/images/hgtucelcom.jpg" alt="<?php the_title(); ?>" />
<?php endif; ?>