$(document).ready(function() {
   $('#navbar .primary').each(function(i) {
      var timeOut;
         $(this).hover(function() {
            clearTimeout(timeOut);
            $('#navbar .primary').removeClass('active');
            $('#navbar .primary').css('background', 'url("http://www.scubasworld.com/images/nav_button.png") no-repeat');
            $('#navbar .secondary').css('display','none');
            $(this).addClass('active');
            $(this).css('background', 'url("http://www.scubasworld.com/images/nav_button_active.png") no-repeat');
            $('.secondary', this).css('display','block');
         }, function(){  // on mouseOut
            var self = this;
            timeOut = setTimeout(function() {
               $(self).removeClass('active');
               $(self).css('background', 'url("http://www.scubasworld.com/images/nav_button.png") no-repeat');
               $('.secondary', self).css('display','none');
            }, 300);
         });
   });
});