annotation.js — Enable annotations?
<xsl:param name="annotation.js" select="'http://docbook.sourceforge.net/release/script/AnchorPosition.js http://docbook.sourceforge.net/release/script/PopupWindow.js'"></xsl:param>
If annotation.support is enabled and the
document contains annotations, then the URIs listed
in this parameter will be included. These JavaScript files are required
for popup annotation support.