This code explains how easy it is to run maximage within a containing element.

maximage-fillelement.css

/* Basic CSS for FillElement */
#holder {
	height:300px;
	overflow: hidden;
	width:300px;
}

#maximage {
	position:relative !important;
}

maximage-fillelement.js

$(function(){
	$('#maximage').maximage({
		cycleOptions: {
			fx: 'scrollHorz',
			speed: 1000,
			timeout: 5000,
			prev: '#arrow_left',
			next: '#arrow_right',
			pause: 1
		},
		fillElement: '#holder',
		backgroundSize: 'contain'
	});
});