Parsing of CSS files for image URLs
From Documentation
This documentation is for an older version of ZK. For the latest one, please click here.
Embed css file in a dsp file, is the way how ZK preprocess css file to support encodeURL()
You may unjar zk package and refer to "box.css.dsp"
The syntax to use taglib is a little different in ZUL and dsp.
<?taglib uri="http://www.zkoss.org/dsp/web/core" prefix="c"?> --- in zul
<%@ taglib uri="http://www.zkoss.org/dsp/web/core" prefix="c" %> --- in dsp
Please refer to : Parsing of CSS files for image URLs? for more detail