个已实现的例子：通过Javascript在页面中直接调用Office Communicator API
<html>
<head>
<script language="javascript">
function ShowMessageForm(uri)
{
var messenger = new ActiveXObject("Messenger.UIAutomation.1");
messenger.InstantMessage(uri)
}
</script>
</head>
<body>
<p><input type='button' value='Zhou' onclick = "ShowMessageForm('sip:Zhou@yourserver.com')" /></p>
<p><input type='button' value='Liu' onclick = "ShowMessageForm('sip:Liu@yourserver.com')" /></p>
</body>
</html>