Eclipse javac is screwed?

[Vadim Gritsenko]

Got this:

09:36:38.789 WARN!! Error for /samples/xscript/simple
java.lang.UnsupportedClassVersionError: 
org/apache/cocoon/www/samples/docs/samples/xscript/simple_xsp 
(Unsupported major.minor version 48.0)
       at java.lang.ClassLoader.defineClass0(Native Method)

Seems like eclipse compiler is screwed badly under jdk 1.3.1... Can it 
be configured to work properly?

PS Pizza works just fune

Vadim