Re: Struts 2 performance

After playing around with Firebug a little I found out that in our project
the most costly thing in the page loading process is loading the dojo
.js-files. For some reason they are included in the xhtml theme too. If I
substitute

<s:head theme="xhtml" />

with

<link rel="stylesheet" href="/ikaros-webgui/struts/xhtml/styles.css"
type="text/css"/>

leaving out the dojo stuff, pages are loading really fast again. Is there
any reason besides the client side validation that the dojo includes are
needed for the xhtml theme?