title: regular expression for url
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/161738/what-is-the-best-regular-expression-to-check-if-a-string-is-a-valid-url">What is the best regular expression to check if a string is a valid URL?</a>  </p>
  </blockquote>
  
  
  
  <p>what is the regular expression for a url without <code>http://www.</code>? i'd like to validate whether it is uri or not when the user enters the uri name</p>