site-wide image seo

Hi guys. Ok so I want to use the following code on my blog: <h3><a href="<?php the_title(); ?>.jpg" rel="lightbox"><img src="imagefolder/<?php the_title(); ?>.jpg" alt="<?php the_title(); ?>" align="left" /></a><</h3> I will insert it in my template at the beginning of every post, and the...