calculate x position with postion:relative and width/maxWidth

[scooterw]

An attempt at resolving issue #1670. See also: mapbox/mapbox.js#383

[mourner]

Thanks! Please fix the whitespace (spaces to tabs).

[scooterw]

Converted spaces to tabs. Let me know if there are other issues and I will fix. Thanks!

[mourner]

Sorry to annoy with such a minor thing but I meant only fixing whitespace for the lines that you've added. Leaflet uses "smart tabs" approach — tabs for indentation and spaces for alignment (e.g. under a var statement).

Regarding the change itself, can you check all the major browsers to see if there's no regressions from this change?

[scooterw]

No annoyance. I apologize. I should have paid closer attention. Let me work on fixing the tab / spacing issues. I will also check for regressions in major browsers.

[scooterw]

Ran test suite in IE 7 / 8 / 9, FF, Chrome, and Safari. No regressions that I could see from master. Failing tests in latest Chrome and Safari (popup closing) were present in master as well as feature branch.

[mourner]

@jfirebaugh ok to merge?

[jfirebaugh]

Tested it against the original page I saw this issue on and it looks good. 👍 Thanks @scooterw for fixing!