/* ---------- NAV MAIN STYLES ---------- */

#nav_main ul.menu {
margin: 0px;
padding: 0px;
list-style: none;
}

#nav_main ul.menu li.item57b, 
#nav_main ul.menu li.item58b, 
#nav_main ul.menu li.item59b,
#nav_main ul.menu li.item60b,
#nav_main ul.menu li.item61b,
#nav_main ul.menu li.item62b,
#nav_main ul.menu li.item63b,
#nav_main ul.menu li.item64b,
#nav_main ul.menu li.item666b
 {
display: block;
float: left;
}

#nav_main ul.menu li.item57b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_aviation.gif) no-repeat; }
#nav_main ul.menu li.item57b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_aviation_over.gif) no-repeat; }

#nav_main ul.menu li.item58b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_jumpstart.gif) no-repeat; }
#nav_main ul.menu li.item58b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_jumpstart_over.gif) no-repeat; }

#nav_main ul.menu li.item59b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_technology.gif) no-repeat; }
#nav_main ul.menu li.item59b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_technology_over.gif) no-repeat; }

#nav_main ul.menu li.item60b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_about.gif) no-repeat; }
#nav_main ul.menu li.item60b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_about_over.gif) no-repeat; }

#nav_main ul.menu li.item61b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_news.gif) no-repeat; }
#nav_main ul.menu li.item61b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_news_over.gif) no-repeat; }

#nav_main ul.menu li.item62b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_calendar.gif) no-repeat; }
#nav_main ul.menu li.item62b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_calendar_over.gif) no-repeat; }

#nav_main ul.menu li.item63b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_locations.gif) no-repeat; }
#nav_main ul.menu li.item63b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_locations_over.gif) no-repeat; }

#nav_main ul.menu li.item64b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_playground.gif) no-repeat; }
#nav_main ul.menu li.item64b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_playground_over.gif) no-repeat; }

#nav_main ul.menu li.item666b { background: url(/blog/wp-content/themes/pia/images/navigation/nav_blog.gif) no-repeat; }
#nav_main ul.menu li.item666b:hover { background: url(/blog/wp-content/themes/pia/images/navigation/nav_blog_over.gif) no-repeat; }