java amd64 plugin

Is there a java amd64 plugin for firefox. I downloaded the amd64 jre and sdk versions of java 1.5.0_6 and neither had the /plugins dir like the i386 documentation suggests ? I also found it strange that installing the java plugin via YaST2 inserted the i386 plugin yet it didnt work when restarting firefox ? Which also makes me wonder, so its ok to install i386 rpms into an amd64 version of SUSE ?