title: To exclude Class from Body on Click eevent
body: <p>I want to Toggle a Class on body click. But if specific DIV having class "mainDIV" is reflecting on the same body then I want to
  exclude body click event for that DIV. So that when user click on "mainDIV" body click event must not be occur.</p>
  
  <p>I am using this CODE in jQuery but its not working:</p>
  
  <pre><code>$("body :not(.mainDIV)").bind("click", function() {
    $('.offerClass').show();
  });
  </code></pre>