try catch for ie8 filter issue when gradient filter used
Merge pull request #41 from LRotherfield/master

IE8 issue when using filter gradient in css
prevent accessing property of null/undefined objects
Merge pull request #42 from gwokae/master

To prevent accessing properties of null/undefined object
added new param: timeoutAfterMove : bool. Adds additional timeout after user action before closing
added; example of timeoutAfterMove
Release 3.1.0
Merge branch 'master' into gh-pages