title: remove and add class with linear easing is not working
body: <p>Not able to control the linear easing in remove class as well as add class $("#masthead").removeClass("header_bottom", 700, "linear"); </p>
  
  <p>Here is my site <a href="http://developermobulous.com" rel="nofollow">http://developermobulous.com</a> link  you can check on scroll the header comes but it goes little above to the default top and little below to the default bottom. </p>
  
  <p>Answer will be really appreciating</p>