Image Issue #1

<?php
			if ( has_post_thumbnail() ) { ?>
                    	<?php
                    	$imgsrcparam = array(
						'alt'	=> trim(strip_tags( $post->post_excerpt )),
						'title'	=> trim(strip_tags( $post->post_title )),
						);
                    	$thumbID = get_the_post_thumbnail( $post->ID, 'two', $imgsrcparam ); ?>
                        <div class="preview"><a href="<?php the_permalink() ?>"><?php echo "$thumbID"; ?></a></div>

                    <?php } else {?>
                        <div class="preview"><a href="<?php the_permalink() ?>"><img src="<?php bloginfo('template_url'); ?>/images/default-thumbnail.jpg" alt="<?php the_title(); ?>" /></a></div>
                    <?php } ?>