[컴][웹] 로딩 사인, loading sign javascript , image loading sign

loading sign / 로딩 사인 처리 /

See Also

1. GWT 에서 css background image 사용 : http://stackoverflow.com/questions/6236673/gwt-uibinder-and-image-sprites
2. https://code.google.com/p/google-web-toolkit/wiki/CssResource#Image_Sprites
3. @sprite does not have access to ClientBundle resources
4. How to show a “Loading…” pop-up in your GWT app

Reference

1. Show loading indicator with jQuery
2. http://jqueryfordesigners.com/image-loading/