Edit in JSFiddle

$('#test').clipexpand();
<img id=test src="http://imgur.com/9ptco.jpg" data-width=231 data-height=347 />

#test {
    position: absolute;
    clip: rect(150px, 180px, 347px, 30px);
    width: 231px;
    height: 347px;
}

External resources loaded into this fiddle: