will this image link create session loss , help novice

[yanarasod]

i made a image link in a file the code is

 

<a href="<?php echo tep_href_link(FILENAME_DEFAULT); ?>"><?php echo tep_image(DIR_WS_IMAGES . 'aboutus.jpg', HEADING_TITLE); ?></a>

 

will this work, is it going to create errors