title: HTML5 <animate> Tag not working in IE11
body: <p>After learning some HTML basics I tried to make this animation, which works in my Firefox browser.<br>
  Now I wonder why it doesn't work on my IE 11 as excepted.<br>
  It shows everything but it doesn't play the animation.<br>
  Here's the HTML-Text:</p>
  
  <pre><code>&lt;!doctype html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;HTML5 Circle Test&lt;/title&gt;
  &lt;style&gt;
  svg{
   vertical-align:top;
   border:5px solid black;
   border-radius: 10px;
  }
  circle{
   cursor: pointer;
  }
  &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;svg width="1000" height="1000"&gt;
  &lt;circle cx="0" cy="0" r="50" fill="yellow" stroke="black"&gt;
  &lt;animate attributeName="cx" from="-50" to="1100" dur="5s" fill="freeze" repeatCount="indefinite"/&gt;
  &lt;animate attributeName="cy" from="100" to="700" dur="5s" fill="freeze" repeatCount="indefinite"/&gt;
  &lt;animate attributeName="r" from="50" to="100" dur="5s" fill="freeze" repeatCount="indefinite"/&gt;
  &lt;circle/&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Another thing: I tried it out without having the admin rights and can't access many properties of IE, could it be that IE is blocking something that I have to change first?<br>
  Since I'm new to HTML I would also appreciate if someone could give me useful hints to these kinds of problems because, for example, I can't find the animate tag in w3schools in the HTML Element Reference.</p>