[jQuery] ui draggable (option drag doesn't work)

[jQuery] ui draggable (option drag doesn't work)


Hello,
The question is why drag-option doesn't work ( options.drag     = function
(event,info) { alert('drag'); } )?
Thanks in advance.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Scroll element</title>
<style type="text/css">
    .scrollable {
        overflow:hidden;
        height:200px;
        width:350px;
        margin:100px auto;
    }
    .bloc {
        margin:5px auto;
        font-size:12px;
    }
    .scr_cnt_handle {
        float:left;
        height:100%;
        border:1px solid #000;
    }
    .scr_body {
        float:left;
        overflow:hidden;
        height:200px;
        width:300px;
    }
    .ctr_handle {
        width:20px;
        height:40px;
        background-color:#006699;
    }
</style>
<script src="jquery-1.3.1.min.js" type="text/javascript"
language="javascript"></script>
<script src="ui.core.js" type="text/javascript"
language="javascript"></script>
<script src="ui.draggable.js" type="text/javascript"
language="javascript"></script>
<script type="text/javascript" language="javascript">
$(function(){
    var options = {};
    options.containment = 'parent';
    options.axis = 'y';
options.drag      = function(event,info) { alert('drag'); }
    $('.ctr_handle').draggable(options);
});
</script>
</head>
<body>
    <div class="scrollable">
        <div class="scr_body">
            <div class="bloc">
                <img src="FooterRevision.png" width="60" height="60"
style="float:left;" />
                Text some here text! Text some here text! Text some here text!
Text some here text!
            </div>
            <div class="bloc">
                <img src="InteriorPage1.png" width="60" height="60"
style="float:left;" />
                Text some here text! Text some here text! Text some here text!
Text some here text!
            </div>
            <div class="bloc">
                <img src="InteriorPage2.png" width="60" height="60"
style="float:left;" />
                Text some here text! Text some here text! Text some here text!
Text some here text!
            </div>
            <div class="bloc">
                <img src="FooterRevision.png" width="60" height="60"
style="float:left;" />
                Text some here text! Text some here text! Text some here text!
Text some here text!
            </div>
        </div>
        <div class="scr_cnt_handle">
            <div class="ctr_handle"></div>
        </div>
        <div style="clear:both;"></div>
    </div>
</body>
</html>