SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<input type="checkbox" id="test" class="cb" />
<input type="checkbox" id="test2" class="cb"/>

<div id="example">Example</div>
<div id="example2">Example2</div>

JavaScript

$(document).ready(function(){
  $(".cb").change(function() {    
    $("#" + this.id.replace('test', 'example')).toggle(this.checked);
  }).change();
});