Several viruses in chest

Hi,

There are four detected files that I have had in the chest that I’m curious about. Avast is not detecting an infection now with full scan and I’m not experiencing any problems that I am aware of so wondering what to do about these files.

Showing:
JS:Pdfka-BTI Expl
Agent - IZ Trj.
HTML:JNLP-B Trj.
Java:CVE_-2012-1723 - BTR Expl.

leave for a week or two… if no problems, delete

Clean, Quarantine, or Delete? http://antivirus.about.com/b/2007/03/11/clean-quarantine-or-delete.htm

how to use virus chest. http://www.avast.com/en-eu/faq.php?article=AVKB21#artTitle