The TikiWiki adaptation of this design uses one table to keep things sliding smoothly for IE7. The site title can be added with site identity custom code. A dynamic content block can display content in the narrow black space next to the search link. A banner can be displayed using the Look & Feel banner option. (Actually I couldn't get this to work in any theme as of October 3. I hard-coded the banner image in tiki-site_header.tpl for now.) And not shown in this demo (not yet at least) is a section at the top of the content area that in the original design held a row of thumbnails. This can be configured with Look & Feel top bar custom code.