Almost a great plugin

I really like this plugin easy to use clean and does a great job. I’m using the mars template with my own mods.

However just a few things you should consider for future versions…

Google autocomplete messes up the values of the ‘Password’ field for some reason. When it autocompletes the form doesn’t register that the password field has a value. So this means the ‘Password’ span shows on-top of the autocompleted password. (Doesn’t have an issue with usernames. This annoyingly called to turn autocomplete off as it looked so messy.)

Secondly auto complete has always got a horrible yellow background this makes the form look messy, so i added css to get rid of the yellow autocomplete ( See link at bottom to jsfiddle with css).

Next is the javascript section it wont work with jquery as the plugin is included before jquery has been included. This is annoying for anyone who likes to use jquery in the advanced code section. However for anyone wondering how to get around this you need to use javascript on load and then include Jquery. ( See Jsfiddle link at bottom ).
This is also the case with the css that you have included it before the forms actual css which means you have to use !important if you want to change any existing form css.

I also updated how errors worked instead of letting them stack up making a mess and a massive error list. I changed them to fade out after a given time. (See Javascript section of jsfiddle link).

Also just a small little edit I found the back button using the title of my site was quite long and got very hard to read and lost in the register and forgotten password buttons. So I have moved it to sit in the bottom left corner, I will also include the css for that just incase you like the idea.

However I do really like this plugin there just my few fixes i put in to make it visually better.

See Jsfiddle Alterations
Password field issue Autocomplete screenshot
If this plugin could get any better it would just be the option to add more fields to the register page. Anyway Great Plugin.