title: How to build an iframe page that searches and displays multiple sites?
body: <p>I'm trying to build a page similar to www.bing-vs-google.com, but instead of bing and google, I want to populate it with several of my company's internally-used sites.  This would function as a "universal search" for our employees to search across a variety of sites (all of which pass search queries via URL).</p>
  
  <p>Has anyone seen or done this before?  Any advice is appreciated.</p>