PHp Login Script V2.3
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Updated - 17/09/2010

* NEW! Added user levels
* NEW! New and simple Admin area. No need to login separately as admin.
* NEW! Automatic or Manual activation feature for user registrations
* Removed SMTP for emails, just uses php mail function
* Fixed cookie and session vulnerabilities (session hijacking, XSS and injection)
* NEW! Added salted passwords with sha1 hashing
* Fixed error messages using GET
* New user edit feature
* Added non deletion of admin account.
* Fixed the IE8 issue button not working 

* Fixed admin md5 exploit in logout.php