mbostock/d3 — pull request #1602 by mbostock (2013-10-25 21:56:28+00:00)
Title: Prefer selectstart to user-select.

Rather than both setting the user-select to none and suppressing the selectstart event, we now prefer to suppress the selectstart event if supported. This avoids redundantly setting the user-select style, which can be slow. Fixes #1599.