I am unable to get the data from my ajax request to appear inside <div class="l_p_i_c_w"></div>. What am I doing wrong? I know the function inside my_file.php works, because if I refresh the page, then the data shows up where it should.

jQuery:

$.ajax({
        type: "POST",
        url: "my_file.php",
        dataType: 'html',
        success: function(data){
            $('div#myID div.l_p_c div.l_p_i_c_w').prepend(data);
        }
});

HTML:

<div class="l_p_w" id="myID">
    <div class="l_p_c">
        <div class="l_p_i_c_w">
       <!-- stuff, or may be empty. This is where I want my ajax data placed. -->
        </div>
    </div>
</div>

CSS:

.l_p_w {
    width:740px;
    min-height:250px;
    margin:0 auto;
    position:relative;
    margin-bottom:10px;
}

.l_p_c {
    position:absolute;
    bottom:10px;
    right:10px;
    width:370px;
    top:60px;
}

.l_p_i_c_w {
    position:absolute;
    left:5px;
    top:5px;
    bottom:5px;
    right:5px;
    overflow-x:hidden;
    overflow-y:auto;
}