Wow, thanks for your quick response! This certainly did remove the GraphMLViewer's overview, as advertised.
Looks as if i didn't know enough to ask the right question, or, maybe, this step needed to have been taken care of first (i.e. remove the overview)?
With the overview removed the graph may have shifted slightly to the left; however, it is still mostly off-screen (again the url is: http://www.perryrecommends.com/interconnected-life-diagram/connected-life.html
Specifically, I need to left-align it or, otherwise, shift it to the left on the canvas, so that all of it will be viewable on the smallest smartphone screens. Here is a smartphone simulator view of how it looks now: http://mobiletest.me/samsung_galaxy_y_emulator/#u=http://www.perryrecommends.com/interconnected-life-diagram/connected-life.html
Whether this will involve adjusting the (left) margin/border, or coding some function to make it automatically response to the viewer's screen size, whatever works?
Thanks again for any additional help!