[oXygen-user] DITA webhelp plugin ans new icons

Hi, I'm using the oxygen Webhelp DITA plugin and I try to find the way to add new icons to be accessed by my customized CSS. This occurs because I'm specializing the note element to different other elements. I only found the possibility to add my new icons straight within the DITA Oxygen framework bu this is not easy to deploy out. So, my question : is it possible to provide an icon directory, or something like that, to be copied out when generating the webhelp ? Thanks for answering, Pierre