title: Difference between Iframe and position div
body: <p>I am having an issue about the pop and <code>iframe</code>. </p>
  
  <p>I want to show a window or <code>div</code> to pop in the center of the screen to show the contents.</p>
  
  <p>My question is, should I use <code>iframe</code> or <code>position div</code> for this type of requirment.</p>
  
  <p>What's the main different between these. I thought <code>position div</code> will basically replace the</p>
  
  <p><code>iframe</code>. Am I right? </p>
  
  <p>Thanks a lot!</p>