.chatvds_menu
{
  display: inline;
  cursor: pointer;
  padding: 5px;
  background-color: #333;
  color: #ffff00;
  text-align: center;
  border:1px solid #999;
}
.chatvds_menu:hover
{
  background-color: #000;
}
.thongdiep_chat
{
  position: fixed;
  bottom: 30px;
  right: 80px;
}
.anhientuychinh_chat
{
  display: none;
  padding: 5px;
  margin-right: 5px;
  background: #000;
  border:1px solid #999;
}
.tuychinh_chat
{
  z-index: 999;
  height: 20px;
  position: fixed;
  bottom: -1px;
  right: 5px;
  font-family: Tahoma, Arial;
  font-size: 12px;
  font-weight: bold;
}
#chatvds
{
  background-image: url("http://i48.servimg.com/u/f48/13/58/60/43/mainco13.png");
  z-index: 999;
  position: fixed;
  right:5px;
  bottom: 30px;
  width: 50%;
  height: 50%;
  margin: 0px;
  padding: 0px;
  display:none;
  border:1px solid #999;
}
#mes_chatvds, #onl_chatvds, #away_chatvds {color: #ff0000;}

if (my_getcookie('check_loginchat')!='off')
{
setTimeout('chatvds_login_on();',2000);
}
else
{
$('.autologinchatvds').removeAttr('checked');
};

function trangthai_chatvds() {
 
old_tn = my_getcookie('old_messenger');
new_tn = $('#chatvds').contents().find('#chatbox p').length;
 
new_messenger = parseInt(new_tn) - parseInt(old_tn);
if ($('#chatvds').contents().find('#chatbox_option_co').css('display')!='none')
{new_messenger = 'Off';}
else if ((new_messenger < 0)||($('#chatvds').css('display')!='none'))
{new_messenger = '?';};

$('#mes_chatvds').html(new_messenger);

onl = $('#chatvds').contents().find('#chatbox_members ul:eq(0) li');
away = $('#chatvds').contents().find('#chatbox_members ul:eq(1) li');
if (away[0])
{
$('#onl_chatvds').html(onl.length);
$('#away_chatvds').html(away.length);
}
else
{
tt = $('#chatvds').contents().find('#chatbox_members h4').text();
if (tt == 'Online') {$('#onl_chatvds').html(onl.length);$('#away_chatvds').html('0');};
if (tt == 'Away') {$('#onl_chatvds').html('0');$('#away_chatvds').html(onl.length);};
};

if ($('#chatvds').css('display')!='none' && $('#chatvds').contents().find('#chatbox_option_disco').css('display')!='none'){luutru_tn();};

if (new_messenger != 'Off'){setTimeout('trangthai_chatvds();',3000);};
};

function chatvds_login(){
$('#chatvds').slideToggle(function(){
if ($('#chatvds').css('display')!='none'){chatvds_login_on();};
if ($('#chatvds').contents().find('#chatbox_option_disco').css('display')!='none'){luutru_tn();};
});
};

function chatvds_login_on(){
if ($('#chatvds').contents().find('#chatbox_option_co').css('display')!='none')
{$('#chatvds')[0].contentWindow.CB_disconnect();};
setTimeout('trangthai_chatvds();',2000);
};
 
function luutru_tn(){
old_messenger = $('#chatvds').contents().find('#chatbox p').length;
my_setcookie('old_messenger',old_messenger, 1);
};

function hien_tuychinh(){
$('.anhientuychinh_chat').css('display','inline');
if ($('.autologinchatvds').attr('checked')){my_setcookie('check_loginchat','on', 1);}
else {my_setcookie('check_loginchat','off', 1);};
};

function an_tuychinh(){$('.anhientuychinh_chat').css('display','none');};

<div class="tuychinh_chat" onmouseover="hien_tuychinh();" onmouseout="an_tuychinh();"><div class="anhientuychinh_chat">
<input class="autologinchatvds" type="checkbox" checked="checked" /><span class="gensmall"> Auto Login</span>
</div><div class="chatvds_menu" style="display:inline;" onclick="chatvds_login();">Chat VĐS [<span id="mes_chatvds">Off</span>] - Online [<span id="onl_chatvds">?</span>] Away [<span id="away_chatvds">?</span>]</div>
</div>
<iframe id="chatvds" src="/chatbox/index.forum?archives=1"></iframe>