function setServerDomain() {
	var locationHostname = document.location.hostname;
	var pPos = locationHostname.indexOf(".");
	if( pPos != -1 ) {
		var serverDomain = locationHostname.substring(pPos + 1);
		try {
			document.domain = serverDomain;
		} catch(e) {
			window.addMessage("Failed to set the serverDomain: " + serverDomain, MSG_TYPE_ERROR, 'serverDomain', MSG_STD_TIMEOUT);
		}
	}
}

setServerDomain();