title: How to make an iframe which displays the parent page
body: <p>I want to display an iframe in a .aspx page, and the iframes source should be the same page.</p>
  
  <p>I need to use a relative uri.</p>
  
  <p>What value should I give the 'src' attribute?</p>
  
  <p>I realise this is a little unusual - the page will be displayed in different states depending on parameters passed in, so the iframe won't be displayed within itself.</p>