echo $vo["id"];
            ?>
 </td>
			<td><a href="<?php 
            echo U('Article/index?cate_id=' . $vo['category_id'] . '&pid=' . $vo['id']);
            ?>
"><?php 
            echo $vo["title"];
            ?>
</a></td>
			<td><span><?php 
            echo get_subdocument_count($vo['id']);
            ?>
</span></td>
			<td><span><?php 
            echo get_document_type($vo['type']);
            ?>
</span></td>
			<td><span><?php 
            echo get_cate($vo['category_id']);
            ?>
</span></td>
			<td><?php 
            echo $vo["level"];
            ?>
</td>
			<td><span><?php 
            echo time_format($vo["update_time"]);
            ?>
</span></td>
			<td><?php 
/**
 * Helper: Returns the document fontawesome icon
 */
function get_document_icon($post = 0, $filename = null)
{
    $form = get_post_meta($post, 'form', true);
    if (!empty($form)) {
        return 'fa-globe';
    }
    switch (get_document_type($post, $filename)) {
        case 'pdf':
            return 'fa-file-pdf-o';
            break;
        case 'doc':
        case 'docx':
            return 'fa-file-word-o';
            break;
        case 'ppt':
        case 'pptx':
            return 'fa-file-powerpoint-o';
            break;
        case 'xls':
        case 'xlsx':
            return 'fa-file-excel-o';
            break;
        case 'wav':
        case 'aif':
        case 'mp3':
            return 'fa-file-audio-o';
            break;
        case 'zip':
        case 'tar':
            return 'fa-file-zip-o';
            break;
        case 'png':
        case 'jpg':
        case 'jpeg':
        case 'gif':
            return 'fa-file-photo-o';
            break;
        default:
            return 'fa-file-text-o';
    }
}