/* Verify login credentials
 *
 * @param username, password
 * @param activityElement - element in which to place activity indicator
 * @param location - location to refresh after success
 * @return none
*/
function verify_login(username, password, activityElement, location)
{
    $.ajax({
        type: 'POST',
        url: '<?=site_url('ajax/eval_login')?>',
        data: { username: username, password: password },
    beforeSend:function() {
        window.savedHtml = $(activityElement).html();
        $(activityElement).html('<div id="activity"></div><div class="text-center">Verifying </div>');
        $('#activity').activity(); //neteye activity indicator plugin
    },
    success:function(data) {
        data = $.parseJSON(data);
        if (data.success) {
            $(activityElement).html(window.savedHtml);

            //fades in success message then performs function
            set_message('Success!',function() {
                alert(location);
                window.location.href = "<?=site_url()?>/" + location;
            });
        } else {
            $(activityElement).html(window.savedHtml);
            set_message(data.error);
        }
        $('#activity').activity(false);
        set_clicks();
    },
    error:function(){
        set_message('<strong>Oops!</strong> Try that again in a few moments.</p>');
        $('#activity').activity(false);
        $(activityElement).html(window.savedHtml);
    }
    });
}

data = $.parseJSON(data);