Enabled/Disabled Button w/ jQuery

<script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
<script language="javascript" type="text/javascript">
$(function(){
    $('#check').click(function(){
        if (document.getElementById('check').checked == true) {
            $('#lol').removeAttr('disabled');
        } else if (document.getElementById('check').checked == false) {
            $('#lol').attr('disabled', 'disabled');
        }
    })
})
</script>

<label>
<input type="checkbox" id="check" /> My CheckBox
</label>
<br />
<button id="lol" disabled="disabled">My Button</button>