jQuery 2.1.0, HTML, CSS, JavaScript
jQuery 1.11.0, HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
"The IDL attributes width and height must return the rendered width and height of the image, in CSS pixels" http://www.w3.org/html/wg/drafts/html/CR/embedded-content-0.html#dom-img-width
http://ja.wikipedia.org/wiki/%E7%95%B0%E4%BD%93%E5%AD%97%E3%82%BB%E3%83%AC%E3%82%AF%E3%82%BF
Underscore 1.4.4, HTML, CSS, JavaScript
jQuery 1.9.1, HTML, CSS, JavaScript
jQuery 1.11.0, HTML, CSS, CoffeeScript