$(document).ready(function(){

  // remove annoying dotted line in firefox after clicking link
  $("#page_menu > a").click(function(){this.blur();});

  // set menu buttons hover effects
  $("#page_menu > a").each(function(index)
                           { 
                             var menu_img = $("#menu_image_container > img").eq(index);
                             if(!menu_img.hasClass('active'))
                               $(this).mouseenter(function(){menu_img.stop(true,true).fadeIn(1000,'swing'); 
                                                           if(menu_img.hasClass('active')) return false; }) // note: 'return false' to prevent bubbling
                                    .mouseleave(function(){menu_img.stop(true,true).fadeOut(500,'swing');});

                           });
});