Video is not playing after select from a video list

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Javascript

HTML

PHP

Ajax

HTML5

Hi,
I have dynamically created a video list from my database. For that I have done my code in php:

$query = "select post,link from pagination order by id desc
limit $pageLimit," . PAGE_PER_NO;
$res = mysql_query($query);
$count = mysql_num_rows($res);
$HTML = '';
$countli = 1;
if ($count > 0) {
while ($row = mysql_fetch_array($res)) {
        if ($countli == 1) {
            $post = $row['post'];
            $link = $row['link'];
            $HTML.='<li class="active"><div>';
            $HTML.='<video ><source src="' . $link . '" /source>' . '<p>' . $post . '/<p>';
            $HTML.='<a href="#"  önClick="javascript:vidSwap('. $link.'); return false;">Link</a></video>';
            $HTML.='</div><br/>';
            $HTML.='</li>';
            $countli = $countli+1;
        }
 else {
     $post = $row['post'];
            $link = $row['link'];
            $HTML.='<li><div>';
            $HTML.='<video ><source src="' . $link . '" /source>';
            $HTML.='<a href="#"  önClick="javascript:vidSwap('. $link.');">Link</a></video>';
            $HTML.='</div><br/>';
            $HTML.='</li>';
            $countli = $countli+1;
 }
    }
} else {
    $HTML = 'No Data Found';
}
echo '<ul id="playlist">';
echo $HTML;
echo '</ul>';

As, while loading my page it automatically generate a video list. And in my html page there is a video player. Code:

<pre lang="HTML">
<div id="leftcolumn">
                            <video id="myvideo" controls='true' style="width:820px;height:360px"
                                preload="auto">
                            </video>
                        </div>

And my javascript code is:

<script type="text/javascrpt">
            function vidSwap(vidURL) {
            var myVideo = document.getElementById()('#myvideo')[0];
            myVideo.src = vidURL;
            myVideo.load();
            myVideo.play();
            }
        </script>

But, when I am clicking in a video file from the list its working. Where is the problem I don't understand.