제이쿼리 애니메이션 예제
http://www.everdevel.com/kr/jquery/animate.php
http://biketago.com/etc/index.html?m=list&id=13
http://superkts.com/jquery/animate
http://mong9.com/index.cgi?page_code=otherpage&code=study_js&num=2
http://programmingsummaries.tistory.com/316
https://developers.google.com/web/fundamentals/design-and-ui/animations/css-vs-javascript?hl=ko