title: Pick out part of a url with javascript regex?
body: <p>If I have the following url:</p>
  
  <p><a href="http://www.youtube.com/watch?v=ysIzPF3BfpQ&amp;feature=rec-LGOUT-exp_stronger_r2-2r-3-HM" rel="nofollow">http://www.youtube.com/watch?v=ysIzPF3BfpQ&amp;feature=rec-LGOUT-exp_stronger_r2-2r-3-HM</a><br>
  or<br>
  <a href="http://www.youtube.com/watch?v=ysIzPF3BfpQ" rel="nofollow">http://www.youtube.com/watch?v=ysIzPF3BfpQ</a></p>
  
  <p>How can I pick out just the 11 character string, ysIzPF3BfpQ?</p>
  
  <p>Thanks for the help!</p>