<!-- BEGIN CBOX - wwwcbox.ws -->
<div align="center" id="cboxdiv">
<iframe frameborder="0" width="600" height="325" src="http://www2.cbox.ws/box/?boxid=1706122&amp;boxtag=pw23bx&amp;sec=main" marginheight="2" marginwidth="2" scrolling="auto" allowtransparency="yes" name="cboxmain" style="border:#B9C8A0 1px solid;" id="cboxmain"></iframe><br/>
<iframe frameborder="0" width="600" height="75" src="http://www2.cbox.ws/box/?boxid=1706122&amp;boxtag=pw23bx&amp;sec=form" marginheight="2" marginwidth="2" scrolling="no" allowtransparency="yes" name="cboxform" style="border:#B9C8A0 1px solid;border-top:0px" id="cboxform"></iframe>
</div>
<!-- END CBOX -->

Вот это код на чат