userProfile

<html>
<head>
<script language="JavaScript">
function function1() {
    navigator.userProfile.addReadRequest("vCard.DisplayName");
    navigator.userProfile.doReadRequest(1, "Desk Reference");
    alert(navigator.userProfile.getAttribute("vcard.DisplayName"));
    navigator.userProfile.clearRequest();
}
</script>
</head>
<body>
<button onclick="function1();">Click here</button>
</body>
</html>