Quicky, it appears that the mozilla-specific

#rap * {
	-moz-opacity: .999;
}

css is introducing those odd lines that you see. (At least, they disappear for me when I remove it).

The big issue, however, appears that the menu <div> has a poorly formed series of nested lists

 <ul>

	<li>What's Next Network</li><ul><li>

- A nested list should look like:

<ul>
  <li>Coffee</li>
  <li>Tea
    <ul>
      <li>Black tea</li>
      <li>Green tea</li>
    </ul>
  </li>
  <li>Milk</li>
</ul>

(from [url=http://www.w3schools.com/xhtml/xhtml_html.asp]w3schools[/url])

If you validate the page at [url=http://validator.w3.org/check?uri=http%3A%2F%2Fwhatsnextnetwork.com%2Fhealth%2F]validator.w3.org[/url] you'll notice 11 validation errors (and you can verify that you have a <li>/<ul> start/stop issue ... since it looks like all the validation breaks result from that ... and it appears to start on the posted line "What's Next Network".

Hope this helps. :)

-stk