$(document).ready(function() {
 $("#thumb_container").wrapInner("<div class='inner'></div>");

 //This scrolls up
 
  $("#up").mouseover(function() {
      $("#thumb_container").animate({scrollTop: 0}, 2000);
 //Stops the action when mouse is not hovering
     }).mouseout(function() {
      $("#thumb_container").stop();
      return false;
  });

 //This scrolls down

  $("#down").mouseover(function() {
   var $x = $(".new").innerHeight();
      $("#thumb_container").animate({scrollTop: $('#thumb_container > .inner').outerHeight()}, 2000);
   //Stops the action when mouse is not hovering    
  }).mouseout(function() {
      $("#thumb_container").stop();
      return false;
  });
  $("#up, #down").click(function(){
   return false;
  });
});