[jQuery] clicking appended element

[system.drawing]

guys,

for example i want to append the <li> element dynamically and attach
the click event

HTML :

<ul id="subs">
</ul>

JS:

$(document).ready(function() {
...
    //add dummy data
    for(var i = 0; i < 5; i++)
    {
        dataString +="<li><a href='#' rel='"+i+"' title='"+i+"'
class='group'>"+i+"</a></li>"
    };

    $('#subs').append(dataString);

// the list is visible, now attach click event

        $("a").filter(".group").click(function() {
                alert(this.getAttribute('rel'));
                });

why the alert(this.getAttribute('rel')) is never executed ?

please advise.