No masks


List item
List item
List item
List item
List item
List item
List item
List item
List item
List item


HTML:
<div id='outerCont'>
    <div id='listCont'>
        <div class='listItem'>
            List item
            <div class='innerMask left'>
            </div>
            <div class='innerMask right'>
            </div>
        </div>
        <div class='listItem'>
            List item
            <div class='innerMask left'>
            </div>
            <div class='innerMask right'>
            </div>
        </div>
        ...
    </div>
</div>

CSS:
#outerCont {
	height: 300px;
	overflow: auto;
	border: 1px solid #777777;
}

#listCont {
	position: relative;
}

.listItem {
	padding: 1.4em;
	background-color: #FFFFFF;
	border-bottom: 1px solid #DDDDDD;
	position: relative;
}

.listItem .innerMask {
	display: none;
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	box-shadow: inset 0 0 4px rgba(0,0,0,0.8);
}

.listItem.left-item-active .innerMask.left {
	display: block;
	background-color: red;
}

.listItem.right-item-active .innerMask.right {
	display: block;
	background-color: green;
}

JS:
lithiumlist.attachToList(
    '123456789',
    document.getElementById('outerCont'),
    document.getElementById('listCont'),
    'listItem',
    {
    	sortEnabled: false,
	    leftMasks: [],
	    rightMasks: []
    }
);