initial preload

git-svn-id: https://plugins.svn.wordpress.org/dwl-preloader/trunk@990203 b8457f37-d9ea-0310-8a92-e5e31aec5664
initial preloader

git-svn-id: https://plugins.svn.wordpress.org/dwl-preloader/trunk@990219 b8457f37-d9ea-0310-8a92-e5e31aec5664