.ux-boundlist-item-checkbox
{
	background-repeat: no-repeat;
	background-color: transparent;
	width: 13px;
	height: 13px;
	display: inline-block;
	line-height: 13px;
	background-image: url('checkbox.gif');
	background-position: 0 0;
}
.x-boundlist-selected .ux-boundlist-item-checkbox
{
	background-position: 0 -13px;
}