fix overlap bug, call functionality and icon urls

git-svn-id: https://plugins.svn.wordpress.org/sliding-social-icons/trunk@847455 b8457f37-d9ea-0310-8a92-e5e31aec5664
update


git-svn-id: https://plugins.svn.wordpress.org/sliding-social-icons/trunk@847458 b8457f37-d9ea-0310-8a92-e5e31aec5664