Prerequisites

You need just two things for this to work correctly: JQuery 1.3.2+ and the switch.gif image file used for the backgrounds (both included in the zip file). After you have those two files, follow the steps below:

Step 1 The HTML

<p  class="field switch">
    <input type="radio" id="radio1" name="field"  checked />
    <input type="radio" id="radio2" name="field" />
    <label for="radio1" class="cb-enable selected"><span>Enable</span></label>
    <label for="radio2" class="cb-disable"><span>Disable</span></label>
</p>
<p class="field switch">
    <label class="cb-enable"><span>On</span></label>
    <label class="cb-disable selected"><span>Off</span></label>
    <input type="checkbox" id="checkbox" class="checkbox" name="field2" />
</p>

Step 2 The Javascript

$(document).ready( function(){
    $(".cb-enable").click(function(){
        var parent = $(this).parents('.switch');
        $('.cb-disable',parent).removeClass('selected');
        $(this).addClass('selected');
        $('.checkbox',parent).attr('checked', true);
    });
    $(".cb-disable").click(function(){
        var parent = $(this).parents('.switch');
        $('.cb-enable',parent).removeClass('selected');
        $(this).addClass('selected');
        $('.checkbox',parent).attr('checked', false);
    });
});

Step 3 The CSS

.cb-enable, .cb-disable, .cb-enable span, .cb-disable span { background: url(switch.gif) repeat-x;  display: block; float: left;  }
    .cb-enable span, .cb-disable span { line-height: 30px; display: block; background-repeat: no-repeat; font-weight: bold; }
    .cb-enable span { background-position: left -90px; padding: 0 10px; }
    .cb-disable span { background-position: right -180px;padding: 0 10px; }
    .cb-disable.selected { background-position: 0 -30px; }
    .cb-disable.selected span { background-position: right -210px; color: #fff; }
    .cb-enable.selected { background-position: 0 -60px; }
    .cb-enable.selected span { background-position: left -150px; color: #fff; }
    .switch label { cursor: pointer; }
    .switch input { display: none; }

Alternatively, you could use a single hidden input field and change the value of it using JQuery. I used this method mainly to illustrate the effect works, as you can actually see the form values changing (to make sure it works).

I know it doesn’t have the fancy animation effects of the alternatives but give it a shot and let me know what you guys think!