title: Change video src using javascript
body: <p>I have HTML code for two version of video, and I'm trying to change automaticly src of Video 2 with src of Video 1
  Video 1 code:</p>
  
  <pre><code>&lt;div id="TopPane5VideoPlayer_TopPlayer"&gt;
       &lt;div id="TopPane5VideoPlayer_divInternalT"&gt;
             &lt;object type="application/x-shockwave-flash" data="../player.swf?url=Root/Videos/3/17-08-2016/742393_ocean.mp4&amp;amp;volume=90&amp;amp;autoPlay=true&amp;amp;previewImageUrl=../Root/Videos/3/17-08-2016/1920X955742393_ocean.jpg" width="1920" height="955" wmode="opaque" id="video_overlay"&gt;
              &lt;/object&gt;
         &lt;/div&gt;
  </code></pre>
  
  <p></p>
  
  <p>Video 2:</p>
  
  <pre><code>&lt;div class="sl-video"&gt;
  &lt;video autoplay&gt;
          &lt;source src="video/trailer.mp4" type="video/mp4; codecs="avc1.42E01E, mp4a.40.2""&gt;
          &lt;source src="video/trailer.webm" type="video/webm; codecs="vp8, vorbis"" /&gt;
              Video not supported.
  &lt;/video&gt;
  </code></pre>
  
  <p></p>