function deleteContact(contact_id) {
    var url = '/contacts_book/'+contact_id+'/delete/';

    $.getJSON(url, function(json) {
        alert(json['msg']);

        if (json['res'] == RESULT_OK) {
            $('#contact_'+contact_id).remove();
        }
    });
}

function changeContactStatus(contact_id, accept, redirect_to) {
    if (accept) {
        var url = '/contacts_book/'+contact_id+'/accept/';
    } else {
        var url = '/contacts_book/'+contact_id+'/block/';
    }

    $.getJSON(url, function(json) {
        alert(json['msg']);

        if (redirect_to != undefined) {
            window.location = redirect_to;
        }
    });
}

function addToContactBook(content_type, object_id) {
    var url = '/contacts_book/add/'+content_type+'/'+object_id+'/';

    $.getJSON(url, function(json) {
        alert(json['msg']);
    });
}