ajax Event on click?

Hey =)

I´m currently working on an php-script for friend-requests and I´m pretty far ... I justdont find out how I get my ajax-Event to run all the time on multiple divs =/

Background:

I´m generating div-container after my friendship-request was successful. In this div container I´m calling over ajax (for transmitting variables/array from my .js-File to my php-file) multiple data (profile_image and user_name). Every div-container has an unique id related to my mysql database.

Everything runs fine, except I´m only getting the data(profile_image and user_name) when clicking on the div ... I couldn`t figuring out another trigger ... so the data is displayed always inside the div as long as it is existing.

My JQuery:

    $(".friendship").click(function() {
var data_string = $(this).attr("id");

$.ajax({
    type: "POST",
    url: 'friend_list.php',
    data: { friend_data_string : data_string },
    success: function(data)
    {
        document.getElementById(data_string).innerHTML = data;
    }

});

My thought was to tell every existing div to have the state ('clicked') ... but haven`t found out anything in the web and searched for a couple of hours for a solution =/

Would be pretty thankful for helpful answers ... so my div`s are getting some life =)

mfg