title: Chat UI library
body: <p>I am making chat system with <a href="http://vline.com" rel="nofollow">vline</a> and symfony2</p>
  
  <p>vline is webRTC platform and API.</p>
  
  <p>I already integreted it with symfony2.</p>
  
  <p>and suceeded in sending messages each client.</p>
  
  <p>However I want to make good UI like Skype.</p>
  
  <p>For this purpose, what kind of approach is best?</p>
  
  <p>Is there any UI library made by HTML5 and Javascript?</p>