How do I construct an XHTML-compliant nested unordered list?
This displays correctly (both FF and IE):
<ul>
<li>list item</li>
<li>list item</li>
<li>list item</li>
<ul>
<li>nested list item</li>
<li>nested list item</li>
<li>nested list item</li>
</ul>
</ul>
But fails validation with this error:
document type does not allow element "ul" here; assuming missing "li" start-tag.
How can I nest a list if I can't put a <ulwithin a <ul??
Thanks in advance.