openlayers/ol3 — pull request #988 by fredj (2013-09-09 08:24:34+00:00)
Title: IE10 compatibility: no tooltip on icon.html example

How to reproduce:
* Open IE10 on Win7 without touch
* Load http://ol3js.org/en/master/examples/icon.html
* click on the icon
* nothing happens

Expected
* Open IE10 on Win7 without touch
* Load http://ol3js.org/en/master/examples/icon.html
* Click on the icon
* A tooltip displaying "Null Island" appears

Note:
* Does work on chrome