To use vNES with your website, copy the text below and edit the three things as specified.
<applet name="vNES" code="vNES.class" archive="JARFILE.JAR" width="512" height="480">
<param name="sound" value="on" />
<param name="timeemulation" value="on"/ >
<param name="fps" value="off" />
<param name="stereo" value="off" />
<param name="rom" value="ROMFILE.NES" />
<param name="showsoundbuffer" value="off" />
<param name="scale" value="on" />
<param name="scanlines" value="off" />
<param name="nicesound" value="on" />
<param name="romsize" value="24592" />
</applet>
Change JARFILE.JAR to the directory in which vNES is located.
Change ROMFILE.NES to the rom you want to play.
Change 24592 to the size (in bytes) of the rom you just specified. This is for the loading counter.