title: Auto check if the input box its possible or not
body: <p>I would like to do something like this:</p>
  
  <p><a href="http://yensdesign.com/tutorials/validateform/" rel="nofollow">http://yensdesign.com/tutorials/validateform/</a> (Fixed Link)</p>
  
  <p>When you type, jquery automatically verify if its a possible result, if is, appears a message like "Ok", if not, appears a message like "Something is wrong, try again"</p>
  
  <p>I don't have any idea how to do it :/</p>