（E文，没时间翻译）
首先做一个Ajax的helper，下面是说明，很简单，粘贴复制就可以了。。。
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
function is_ajax()
{
return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest';
}
?>
Copy the following code into a file. Save the file as ajax_help… Read More
一句话搞定透明背景！
.transparent_class {
filter:alpha(opacity=50);
-moz-opacity:0.5;
-khtml-opacity: 0.5;
opacity: 0.5;
}
UPDATE: I wanted to pull this post out of the archives and update it a bit because it there seems to be a good amount of interest in
