title: Android support lib v4 or v13
body: <p>I have developed an Android application build using API 13 and min-sdk also API 13. I want to incorporate the swiping across the tabs, and for the purpose I am using <a href="http://developer.android.com/tools/extras/support-library.html" rel="noreferrer">v4 support library</a>.</p>
  
  <p>I have following questions,</p>
  
  <ol>
  <li>Which support library I should use v4 or v13?</li>
  <li>Should I change the target to API 14? More importantly how do I decide, which should be my targeted API to compile against?</li>
  </ol>