Creating dynamic video link than play in html5

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Javascript

HTML

PHP

Ajax

jQuery

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I am creating video list dynamically. My code is here:

while($row=mysql_fetch_array($res)){
   $post=$row['post'];
   $link=$row['link'];
   $HTML.='<div>';
   $HTML.='<video ><source src="'.$link.'" /source>'.'<p>'.$post.'/<p></video>';
   $HTML.='</div><br/>';
}

And I have a video player in my page:

<div id="leftcolumn">
                            <video id="myvideo" controls='true' style="width:820px;height:360px">

                            </video>
                        </div>

Now I need a Ajax or Jquery code for play a selected video in #myvido. How can I do this please help me.