I am producing a normal distribution probability plot, and I have a few questions related to confidence interval.

An example of the plot I am creating can be found here:

http://jsfiddle.net/jlbriggs/2gmtB/

Calculated based on the methods described here:

http://www.itl.nist.gov/div898/handbook/eda/section3/normprpl.htm

Note that the y axis is a standard linear axis, not a percentile scaled axis.

I want to plot ci bands on the chart as well, but I am a little lost as to where to start. (example: http://i.imgur.com/Ain27.jpg )

I am writing the calculations myself, not using a stats package.

Some questions:

1) Does a standard approach for this form of probability plot (as opposed to the more common percentile-scaled y axis form) exist whose terminology I am unaware of?

2) is a confidence interval a confidence interval...or are there various ways of calculated for various purposes? Can someone point me to a straight forward method of calculating for this circumstance?

Sorry for the long and vague post. Any help in this would be appreciated.