title: How to dynamic load the document content into an iframe?
body: <p>I would like to make something like this</p>
  
  <pre><code>|--------------------------|
  |                A         |
  |        ____________      |
  |       |            |     |
  |       |            |     |
  |       |      B     |     |
  |       |            |     |
  |       |____________|     |
  |                          |
  |__________________________|
  </code></pre>
  
  <p>The B page is inside the A page, and I want to insert all the js, css, into the A page, and I want to separate the B page, and I design it to use a iFrame, and get the b page dynamically. But if I use the src in the B page iframe, the A page js, css can't control it... How can I exactly insert all the B page code inside the A page, but don't need copy&amp;paste all the code from B page to A page? Thank you. </p>