$(document).ready(function(){
  $('.submenu').hide();
  $('.submenus').bind('mouseenter',function(){
      //var hh=$(this).find('.subdiv').height();
      //$(this).css('height',hh).find('.submenu').show();
      $(this).find('.submenu').show();
    });
  $('.submenus').bind('mouseleave',function(){ $(this).find('.submenu').hide(); });
  //$('.submenus').bind('mouseleave',function(){ $(this).css('height','187px').find('.submenu').hide(); });
});