<html>
<head>
<title>AJAX VIDEO</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script type="text/javascript">
function showVideo(code){
document.getElementById("video").innerHTML = "<iframe width="640" height="360" src="
http://www.youtube.com/embed/ 
" code "?rel=0&showinfo=0&theme=light&autoplay=1&controls=1&autohide=1" frameborder="0" allowfullscreen></iframe>";
}
</script>
</head>
<body>
<div id="video" style=" width:640px; height:360px;background:rgb(51,51,51);border-radius:5px; padding:5px;margin:auto; margin-bottom:20px;"></div>
<img src="
http://i4.ytimg.com/vi/7EZTUYwjWBs/mqdefault.jpg 
" onClick="JavaScript:showVideo('7EZTUYwjWBs');">
<img src="
http://i3.ytimg.com/vi/fTpwaERAuOk/mqdefault.jpg 
" onClick="JavaScript:showVideo('fTpwaERAuOk');">
<img src="
http://i1.ytimg.com/vi/h_uIep6y4Ao/mqdefault.jpg 
" onClick="JavaScript:showVideo('h_uIep6y4Ao');">
<img src="
http://i4.ytimg.com/vi/_yUtYshMy9I/mqdefault.jpg 
" onClick="JavaScript:showVideo('_yUtYshMy9I');">
<img src="
http://i2.ytimg.com/vi/UJYQ8zGGJgs/mqdefault.jpg 
" onClick="JavaScript:showVideo('UJYQ8zGGJgs');">
<img src="
http://i2.ytimg.com/vi/YkGj_2xY3Ok/mqdefault.jpg 
" onClick="JavaScript:showVideo('YkGj_2xY3Ok');">
</body>
</html>