rstudio/shiny — pull request #197 by wch (2013-07-09 16:56:34+00:00)
Title: Add compatibility wrapper for getComputedStyle in IE9

Fixes #196.

The wrapper function is still significantly faster than using jQuery's `.css()` function, which may be important since this is called on every shiny element to see whether it is hidden:
http://jsperf.com/jquery-css-vs-getcomputedstyle/2