For what its worth Bear, I use maxthon browser and it has a screen capture tab. I know mac is different on alot of levels and not sure if maxthon even would work in that environment. But maybe mac has a feature such as this one.
When I tab to capture I have option for region, full screen, window, or current web page.
Like you have described in a later post then this quote sometimes I like to save the whole thread. In the CP I enable page size to show all post. Then when I capture the web page I get the whole thread. I save it to either Word or to my photo editor. Either place I can view the whole page by scrolling.
Not sure if this will help anyone or not but I thought I would throw out there the way I do it.
I'm gonna be like a little kid tomorrow after work, gonna run right in and see if things are up and running yet.
Good Luck to the switch over Jeff. Hey man, don't stress over it lol all good things can be fixed.