Thanks for providing access to your site. I did some tweaking to my plugin on your site and got it to find and remove that last bit of malicious code in your theme. I think your site is all clean now. Can you try reposting any corrupted entries to Facebook and make sure the new postings do not contain these viagra ads.
You will also need to get Google to re-index your site. This may take some time but it will help to go to Webmaster Tools and submit a new sitemap and request a review in the Health section if there is any malware listed there.
If you sill have signs of a current or recurring infection please let me know and I can check your site again.