<!-- dnd1.js -->

agent = navigator.userAgent.toLowerCase();
app = navigator.appName.toLowerCase();

function isNavigatorOk() {
if (agent.indexOf("msie 5") != -1 && agent.indexOf("mac_powerpc") != -1) return false;
if (agent.indexOf("firefox") != -1) return true;
if (agent.indexOf("safari") != -1) return true;
if (agent.indexOf("msie") != -1) return true;
if (agent.indexOf("mozilla/5.0") != -1) return true;
return false;
}