Use the following script to link to chat
Chat files should be in the folder "chat"

<script language="JavaScript">
<!-- hide from JavaScript-challenged browsers
function chat() {
 ww = window.open("chat/default.asp", "ChatWindow", "resizable,width=450,height=500,top=0,left=0")
}
// done hiding -->
</script>
<a href="javascript:chat()">Begin chat</a>