Display thumbnail if present, or alternative content

gistfile1.txt

  	<?php if (has_post_thumbnail( $post->ID ))
			{	
				$image_url = wp_get_attachment_image_src(get_post_thumbnail_id(),'large', true);
				echo  '<div class="news-thumb" style="background-image: url(' . $image_url[0] . ')"></div>';
			}

			else
				{
					echo  '<div class="news-thumb" style="background-image: url('. get_bloginfo('template_directory') .'/images/logo-footer.png)"></div>';
				}
		?>