I don't think there is anything wrong with this code. Maybe you have restrict access to page set on the logon-error.php page that is causing a perpetual redirect?
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.