Hi, We have many places in our JavaScript code where URLs are computed from different fragments. The most common use case is appending query string parameters to an existing URL: window.docgeturl + '?xpage=xpart&vm=' + extraTemplate This code works well in servlet mode but it's almost impossible to integrate in portlet mode because portlet URLs are special http://dev.xwiki.org/xwiki/bin/view/Drafts/PortletIntegration#HPortletURLs . You can't add parameters to a portlet URL by simply appending them to the query string. There are two scenarios (for portlet mode): (1) Either window.docgeturl is a portlet URL written on the server when the page was rendered and in this case parameters appended to the query string will be ignored (2) or window.docgeturl is a servlet URL, but we have to rewrite on the server the computed URL into a portlet URL -- impossible What if we avoid computing URLs in JavaScript code and instead get the URLs from HTML elements (e.g. anchors or forms)? <a id="commentsResourceId" href="$doc.getURL('get', '?xpage=xpart&vm=commentsinline.vm')" class="hidden">Comments</a> ... $(commentsResourceId).href I'm interested to know if this would help others too. Thanks, Marius