I’ve set-up jQueryMobile plugin into my blog mobile version by the instruction of jQueryMobile documentation.
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.css" />
<script src="http://code.jquery.com/jquery-1.4.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.js"></script>
and description page is as follow
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Against All Odds</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.css" />
<link rel="stylesheet" href="_assets/css/jqm-docs.css"/>
<script src="http://code.jquery.com/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.js"></script>
</head>
<body>
<div data-role="page">
<div data-role="header">
<h1>my title</h1>
</div><!-- /header -->
<div data-role="content">
my description
</div><!-- /content -->
</div><!-- /page -->
</body>
</html>
Unfortunately, the image in back button doesn’t appear in my page. And I’ve also put jQuerymobile images folder into my project page. Is there any configuration did I forget to setup?

I was looking through this code yesterday, but instead of looking at the Alpha 2 release (from Nov 12, 2010), I went out to the jquery-mobile page on GitHub and got the master branch download.zip.
The code below is what adds the back button to the header and auto sets the
data-icontoarrow-l. I had also forgot to put the images directory in my project.I also needed to include these js and css files, which I copied from the download into the root directory of my project.