title: Hide iframe if src is empty
body: <p>I work for a school system <a href="http://m.rsd17.org/index1.html" rel="nofollow">http://m.rsd17.org/index1.html</a> and working on an annoucement to show up for school cancellations.  I have an external page that I uncomment and change the text if there is a delay or schools closed.  On the top of my site I want to hide the iframe if I comment out the writing from the external file.  Here is some of the code Im using.</p>
  
  <pre><code>&lt;iframe id="emergency" src="http://f.rsd17.org/frontemergency1.html" width="100%" height="50px" frameborder="0"&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>I want it to show the iframe when I haven't commented out the text in the external html.  And I want it the iframe totally gone so the buttons move back up when there is no message to display.  I've tried a bunch of different jquery scripts, but no luck removing the iframe when the html is empty.  Any thoughts would be great.</p>