title: Nesting HTML- anchor tags
body: <p>Today I was working on a tab navigation for a webpage. I tried the <a href="http://www.alistapart.com/articles/slidingdoors2/" rel="noreferrer">Sliding Doors</a> approach which worked fine. Then I realized that I must include an option to delete a tab (usually a small X in the right corner of each tab). </p>
  
  <p>I wanted to use a nested anchor, which didn't work because it is <a href="http://www.w3.org/TR/html4/struct/links.html#h-12.2.2" rel="noreferrer">not</a> allowed. Then I saw the tab- navigation at <a href="http://www.pageflakes.com" rel="noreferrer">Pageflakes</a>, which was actually working (including nested hyperlinks). Why?</p>