* {
  padding: 0em; margin: 0em;
}

#footer img { border:0; vertical-align:bottom; /* for IE6 */}

#nav { text-align:center; }
#nav table { border-spacing: 0; border-collapse: collapse; margin-left:auto; margin-right:auto;}
#nav table a { float: left; display:block;}
#nav table a img { border:none; vertical-align:bottom; /* for IE6 */}
#nav table a:hover { visibility:visible; }
#nav table a:hover img { visibility:visible; }
#nav table a:hover img/**/ { visibility:hidden; /* hide from IE5.0/win */}

.nav_about { background:url(images/nav_logo_1_alt.gif) no-repeat left bottom; }
.nav_art { background:url(images/nav_logo_2_alt.gif) no-repeat left bottom; }
.nav_random { background:url(images/nav_logo_3_alt.gif) no-repeat left bottom; }
.nav_links { background:url(images/nav_logo_4_alt.gif) no-repeat left bottom; }
.nav_contact { background:url(images/nav_logo_5.gif) no-repeat left bottom; }
.w3c_validator { width:88px; height:31px; opacity:0.25; <!--[if IE]> filter:alpha(opacity=25); <![endif]--> }