(windows?) trojan found in icedtea-cache - any danger?

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http://forums.opensuse.org – Heya! I was bored and did a clamav scan on my system. It found "Trojan.JS.Selace-1" in the cache of the icedteaplugin in home directory I had opened an infected web site a few days ago. Could it be from that? More important however: Can I just delete the infected file and forget about it? Or do I have to worry that it has infected firefox somehow? Are the passwords etc. that I have entered in the mean time, safe? Sorry for the stupid questions. I've been using Linux for years now but never really got into detail with it. Any help is much appreciated! Thanks! Peter (Distributions)