While changing from 6.4 to 6.5 some style elements was removed:
.alternatetable
.new
.onbody
.welcome
I search the scripts and fond used definations for onbody in:
doclosethreads.php
doexpirethreads.php
dokeepthreads.php
domovepost.php
domovethreads.php
doopenthreads.php
dounkeepthreads.php
stickpost.php
unstickpost.php
I search the scripts and fond used definations for welcome in:
login.tmpl