Make "console.log" optional

This patch makes the console logging optional by adding a "debug" boolean option alongside the "inc" option.

I added this because it was hard to debug other site issues when the entire console is cluttered with:

    window:576,779
    box:574,5762
    window:576,779
    box:573,5761

over and over again.

I've also seen console.log cause problems in older version of Internet Explorer.