Fixed JS bug.

git-svn-id: https://plugins.svn.wordpress.org/statsfc-score-predictor/trunk@895157 b8457f37-d9ea-0310-8a92-e5e31aec5664
Tested up to 3.9

git-svn-id: https://plugins.svn.wordpress.org/statsfc-score-predictor/trunk@895203 b8457f37-d9ea-0310-8a92-e5e31aec5664