Лена Лапина,
bind заменить на on, className заменить на "class", ниже готовый вариант с небольшим изменением css
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.tzCheckBox{
background:url('http://s018.radikal.ru/i514/1602/c8/d08e0325cc93.png') no-repeat right bottom;
display:inline-block;
min-width:60px;
height:33px;
white-space:nowrap;
position:relative;
cursor:pointer;
margin-left:14px;
border-radius: 18px;
padding: 0 18px;
margin: 4px;
}
.tzCheckBox.checked{
background-position:top left;
}
.tzCheckBox .tzCBContent{
color: white;
line-height: 31px;
padding-right: 38px;
text-align: right;
}
.tzCheckBox.checked .tzCBContent{
text-align:left;
padding:0 0 0 38px;
}
.tzCBPart{
background:url('background.png') no-repeat left bottom;
width:14px;
position:absolute;
top:0;
left:-14px;
height:33px;
overflow: hidden;
}
.tzCheckBox.checked .tzCBPart{
background-position:top right;
left:auto;
right:-14px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script>
(function($){
$.fn.tzCheckbox = function(options){
// Default On / Off labels:
options = $.extend({
labels : ['ON','OFF']
},options);
return this.each(function(){
var originalCheckBox = $(this),
labels = [];
// Checking for the data-on / data-off HTML5 data attributes:
if(originalCheckBox.data('on')){
labels[0] = originalCheckBox.data('on');
labels[1] = originalCheckBox.data('off');
}
else labels = options.labels;
// Creating the new checkbox markup:
var checkBox = $('<span>',{
"class" : 'tzCheckBox '+(this.checked?'checked':''),
html: '<span class="tzCBContent">'+labels[this.checked?0:1]+
'</span><span class="tzCBPart"></span>'
});
// Inserting the new checkbox, and hiding the original:
checkBox.insertAfter(originalCheckBox.hide());
checkBox.click(function(){
checkBox.toggleClass('checked');
var isChecked = checkBox.hasClass('checked');
// Synchronizing the original checkbox:
originalCheckBox.attr('checked',isChecked);
checkBox.find('.tzCBContent').html(labels[isChecked?0:1]);
});
// Listening for changes on the original and affecting the new one:
originalCheckBox.on('change',function(){
checkBox.click();
});
});
};
})(jQuery);
$(function(){
$('input[type=checkbox]').tzCheckbox({labels:['Enable','Disable']});
})
</script>
</head>
<body>
<div id="page">
<form method="get" action="./">
<ul>
<li><label for="ch_effects">Отображение эффектов: </label><input type="checkbox" id="ch_effects" name="ch_effects" data-on="Показать" data-off="Скрыть" /></li>
<li><label for="ch_location">Включить captcha: </label><input type="checkbox" id="ch_location" name="ch_location" checked /></li>
<li><label for="ch_showsearch">Включить контактную форму: </label><input type="checkbox" id="ch_showsearch" name="ch_showsearch" /></li>
<li><label for="ch_emails">Email уведомления: </label><input type="checkbox" id="ch_emails" name="ch_emails" data-on="ДА" data-off="НЕТ" /></li>
</ul>
</form>
</div>
</body>
</html>