The operating system of what? The client, or the server? If the client, then this will greatly depend on what type of client software is calling your application. If the server, then your server environment will determine how you proceed. -----Original Message----- From: javascript-bounces at LaTech.edu On Behalf Of visitus 04 I am using javascript for a server side application (no browser involved). How can I check the type of operating system i.e. windows or unix flavor? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evolt.org/pipermail/javascript/attachments/20050110/daccf3c5/attachment.htm>