加载AJAX时缺少CSS [重复]

                </div>
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            <div class="grid--cell mb0 mt8">Closed <span title="2012-08-27 23:12:19Z" class="relativetime">7 years ago</span>.</div>
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Possible Duplicate:
jQuery Mobile styles for an asynchronously included div
Jquery mobile listview - check initialization is complete

I have a mobile jquery list view and there is a LOAD MORE BUTTON at the end. Everything works fine except that the css is missing on the new results added using AJAX.

Here is my Button code

<div data-role="fieldcontain">
            <a onclick="loadmore(this);" type="button" id="showmore" href="#more">Load more..</a>
        </div>

Javascript

function loadmore(a) {
    jq("#show_more_btn").removeClass("show_more_btn");
    jq("#show_more_btn").addClass("loading_btn");
    jq("this").css("display", "none");
    if (null == jq.cookie("bp-activity-oldestpage")) jq.cookie("bp-activity-oldestpage", 1, {
        path: "/"
    });
    var b = jq.cookie("bp-activity-oldestpage") * 1 + 1;
    jq.post(ajaxurl, {
        action: "activity_get_older_updates",
        cookie: encodeURIComponent(document.cookie),
        page: b
    }, function (a) {
        jq("#show_more_btn").removeClass("loading_btn");
        jq("#show_more_btn").addClass("show_more_btn");
        jq.cookie("bp-activity-oldestpage", b, {
            path: "/"
        });
        jq("li[class='load-more']").hide();
        jq("#activity-stream").append(a.contents);
    }, "json");
    return false
}

Screenshot of correct listview http://s12.postimage.org/yd2hsk119/original.jpg

Problem http://s17.postimage.org/81ofaf1bz/got.jpg

EDIT: Listview code

<div class="content-primary">   
            <ul data-role="listview"  id="activity-stream">
    <?php endif; ?>

    <?php while ( bp_activities() ) : bp_the_activity(); ?>

        <?php locate_template( array( 'activity/entry.php' ), true, false ); ?>

    <?php endwhile; ?>

    <?php  if ( empty( $_POST['page'] ) ) :  ?>

            </ul>
        </div>

Entry.php

<li id="activity-<?php bp_activity_id(); ?>">
<a href...>...</a>
<h3>...</h3>
<p>...</p>
</li>

Anyone knows what the problem is ?

</div>