OK, I understand now. One thing you could try - go to a website that recognizes a mobile device - for example, weather.com . If you have a color nook set to mobile mode, the webpage fits the screen very nicely, with no scroll bars. If you could get a look at the html on such a site, you might be able to get an idea of how they do it.
Trouble is, of course, how are you going to do that? Seems like you'd have to use your PC browser and do a View>Source and hope that the code for the mobile version of the webpage is in the code for the non-mobile version (i.e. via javascript or just different class usage). If it loads another page when it detects a mobile device, I'm not sure how you could look at the code for that other page, unless you could set your PC browser to mobile mode just for testing and viewing the source. Obviously I haven't looked into this, but it sounds like it might be fun.
