Remember that while it is possible to create stunning and featured sites using Xara Web Designer it is certainly not possible to create anything you might see elsewhere on the web using only Xara Web Designer.
Sometimes placeholders can be used to embed some simple code snippets to add new features to your site, but very often it is simply not possible at all - there are limitations to what you can do with WD. The software has been developed for HTML and code free use by novices (or pros who want to relax, get away from hand coding and enjoy designing in a more fun environment )