You can test your site for this malware at the following URL.. http://sitecheck.sucuri.net/scanner/
These backlinks may effect your site ranking on search engines and we strongly recommend removing this malicious code from your slideshow extension. To do so open up the slideshows default.php which you will find at ../modules/mod_AutsonSlideshow/tmpl/default.php and remove the following..
LINE 564 - Line 580
In some case you might also find the following at the very end of the same file which you should also remove...
<p class="dnn">By A <a href="http://www.autsxx.com/" title="web design company">Web Design</a></p>
Note that if you have only purchased your template recently the malicious code should already be removed.
Alternatively you can download our own J51_Slideshow which can be used in place of the Autson slideshow. This has been made available as a free download at the following dropbox URL... https://dl.dropboxusercontent.com/u/69136519/J51Slideshow_unzip1st.zip
Thank you
Ciarán