In OBIEE 11g, the path for Javascript and Custom Style Sheet is located at-
OBIEE\user_projects\domains\bifoundation_domain\servers\bi_server1\tmp\_WL_user\analytics_11.1.1\7dezjl\war\res\
And for calling them-
<script type="text/javascript" src="res/test.js"></script>
<link href="res/test.css" type="text/css" rel="stylesheet">
Refer- https://forums.oracle.com/forums/thread.jspa?threadID=2453825&tstart=0
OBIEE\user_projects\domains\bifoundation_domain\servers\bi_server1\tmp\_WL_user\analytics_11.1.1\7dezjl\war\res\
And for calling them-
<script type="text/javascript" src="res/test.js"></script>
<link href="res/test.css" type="text/css" rel="stylesheet">
Refer- https://forums.oracle.com/forums/thread.jspa?threadID=2453825&tstart=0