/* Precarga de imagenes */
.preload1 {background: url(menu/pro_drop4_2a.gif); display:none;}
.preload2 {background: url(menu/pro_drop4_2b.gif); display:none;}

/* definicion del menu principal */
.menu {padding:0; margin:0; list-style:none; height:36px; background:transparent url(menu/pro_drop4_back.gif); position:relative; z-index:5; font-family:arial, verdana, sans-serif;}
.menu li.top {display:block; float:left;}
.menu li a.top_link {display:block; float:left; height:36px; line-height:27px; color:#666; text-decoration:none; font-size:11px; font-weight:bold; padding:0 0 0 9px; cursor:pointer;background: url(menu/pro_drop4_0a.gif) no-repeat;}
.menu li a.top_link span {float:left; display:block; padding:0 22px 0 10px; height:36px;background:url(menu/pro_drop4_0b.gif) right top;}
.menu li a.top_link:hover {color:#000; background: url(menu/pro_drop4_2a.gif) no-repeat; line-height:25px;}
.menu li a.top_link:hover span {background:url(menu/pro_drop4_2b.gif) no-repeat right top;}

.menu li:hover > a.top_link {color:#000; background: url(menu/pro_drop4_2a.gif) no-repeat; line-height:25px;}
.menu li:hover > a.top_link span {background:url(menu/pro_drop4_2b.gif) no-repeat right top;}

.menu table {border-collapse:collapse; width:0; height:0; position:absolute; top:0; left:0;}

/* Default link styling */
/* Style the list OR link hover. Depends on which browser is used */
.menu a:hover {visibility:visible; position:relative; z-index:2;}
.menu li:hover {position:relative; z-index:2;}

/* keep the 'next' level invisible by placing it off screen. */
.menu ul, .menu iframe {position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}

.menu ul.sub1 {width:150px;}
.menu ul.sub2 {width:130px;}
.menu ul.sub3 {width:260px;}
.menu ul.sub4 {width:162px;}

.menu :hover iframe.one {left:0; top:35px; width:150px; height:100px;}
.menu :hover iframe.two {left:0; top:35px; width:100px; height:65px;}

.menu :hover ul {left:0; top:35px; background: #b9d3fb; padding:3px; border:1px solid #3a93d2; border-width:0 1px 1px; white-space:nowrap; height:auto; z-index:3;}
.menu :hover ul li {display:block; height:20px; position:relative; font-weight:normal; width:auto;}
.menu :hover ul li a {display:block; font-size:11px; height:20px; line-height:20px; width:auto; padding:0 10px; color:#000; text-decoration:none;}
.menu :hover ul li a:hover {background:#3a93d2; color:#fff; font-weight:normal;}