este código te va a servir de mucho-.... solo pegalo en tu web y listo
pegalo en la parte q quieras q aparesca.
mejor si lo pones encima de pagina
<!-- chat -->
<script type="text/javascript">
var cbvis = false;
var cbload = false;
function togglecbox () {
var cbdiv = document.getElementById("cboxdiv");
var cbbut = document.getElementById("cboxbutton");
if (!cbvis) {
if (!cbload) {
cbdiv.innerHTML = '<iframe frameborder="0" width="200" height="305" src="http://www4.cbox.ws/box/?boxid=4079851&boxtag=g3zj67&sec=main" marginheight="2" marginwidth="2" scrolling="auto" allowtransparency="yes" name="cboxmain" style="border:#ababab 1px solid;border-bottom:0px" id="cboxmain"></iframe><iframe frameborder="0" width="200" height="75" src="http://www4.cbox.ws/box/?boxid=4079851&boxtag=g3zj67&sec=form" marginheight="2" marginwidth="2" scrolling="no" allowtransparency="yes" name="cboxform" style="border:#ababab 1px solid;border-top:0px" id="cboxform"></iframe>';
cbload = true;
}
cbdiv.style.display = "block";
cbbut.innerHTML = "Cerrar el Chat";
}
else {
cbdiv.style.display = "none";
cbbut.innerHTML = "Entrar al Chat";
}
cbvis = !cbvis;
}
</script>
<div id="cboxbutton" style="position: fixed; bottom: 8px; Left: 16px; width: 200px; padding: 3px; text-align: center; cursor: pointer; background-color: #EDF3F7; border:#C3D7E5 1px solid;border-radius: 3px; font-family: Tahoma, sans-serif; font-size: 14px;" onclick="togglecbox()"><b>Open Cbox</b></div>
<div id="cboxdiv" style="display: none; position: fixed; bottom: 48px; Left: 16px; width: 200px; background: #EDF3F7; padding: 3px; line-height: 0;border:#C3D7E5 1px solid;border-radius: 3px;"></div>
<!-- fin chat -->
