span.checkbox {
    cursor: pointer;
    display: inline-block;
	width:16px;
	height:16px;
}
span.checkbox input {
    display: none;
}
span.checkbox .check {
    float: left;
	width:16px;
	height:16px;
}
span.checkbox.checked .check {
    background: url("checkmark.png") no-repeat;
	background-size: 100% 100%;
    background-position: 0px 0px;
}
span.checkbox.disabled .check {
	opacity:0.5;
}