function refresh_chat(){
    $.ajax({
        'url' : '/api/check_status/',
        'type' : 'post',
        'dataType' : 'json',
        'data' : {'id' : document.last_message_id},
        'success' : function(data){
            if (data.is_online)
            {
                var html = '<div id="stat_img" style="background-image: url(/site_media/imgs/lamp_on.png); background-position: center;"></div>\
                            <span>' + document.lang_dict['therapist_online'] + '</span>'
                $('#status').html(html);
                $('#inOn.online').show();
                $('#inOff.offline').hide();
            }
            else
            {
                var html = '<div id="stat_img" style="background-image: url(/site_media/imgs/lamp_off.png); background-position: center;"></div>\
                            <span>' + document.lang_dict['therapist_offline'] + '</span>'
                $('#status').html(html);
                $('#inOn.online').hide();
                $('#inOff.offline').show();
            }
            setTimeout('refresh_chat()', 3000);
        },
        'error' : function(){
            setTimeout('refresh_chat()', 3000);
        },
        'timeout' : function(){
            setTimeout('refresh_chat()', 3000);
        }
    });
}
function start_chat()
{
    refresh_chat();
}
$(document).ready(function(){
    start_chat();
});