regarding ids, that's what I did but only the last id works :-(
I noticed that you can also use classes and that works but as I said only the last one added.
with the progress bar. I tried to do something like this but the problem is when I click on something it takes time until it actually loads the page and until then the progress bar isn't appearing.
you know how you can see the loading circle spinning left in firefox/chrome spinning left until it pings the page and then spin right and actually loads the page? When it's spinning left I couldn't find the way to display the progress bar. Only when it actually loads. And also I think that's the reason why page blinks - fades in/ fades out twice after refresh.