wrong X position calculated for body with max-width and relative position

[jfirebaugh]

http://bl.ocks.org/jfirebaugh/raw/fd2d26ef85831783f149/

Look at the x positions logged to console on mousemove event. They are off by a significant amount. Depending on your browser width, the mousemove events might not even get dispatched. If not, widen the window.

Trigger seems to be:

        body {
            position: relative;
            max-width: 500px;
            margin: 0 auto;
        }

[mourner]

Yep, I see... It's the same with just width too. Need to look at the L.DomUtil.getMousePos code.

[jfirebaugh]

This is what d3 uses, seems to work for this case.