Ah....technical question

Anyone know anything about server files labeled: "var_www_squirrelmail_themes" ?

I know it's a web email program -- but what would 15-20 of these files mean? It's on an abandoned website I wish to access and download. Do I delete? Take down with the site?

Inquiring minds want to know....

UPDATE: Apparently they can just float around up there, if they want. That's the important thing.