.nav {
	z-index:1000;
	font-size:80%;
	margin:15px 0 5px 8px;
	}

/* remove all the bullets, borders and padding from the default list styling */
.nav ul {
	padding:0;
	margin:0;
	list-style-type:none;
	width:149px;
	}

/* position relative so that you can position the sub levels */
.nav li {
	position:relative;
	background:#C2DDC0;
	line-height:14px; /* height:23px */
	}
	
.nav li.sub {
	background:#669A99;
	}

/* get rid of the table */
.nav table {
	position:absolute;
	border-collapse:collapse;
	top:0;
	left:0;
	z-index:100;
	font-size:1em;
	}

/* style the links */
.nav a, .nav a:visited {
	display:block; 
	text-decoration:none;
	height:22px;
	line-height:22px;
	width:149px;
	color:#000;
	text-indent:5px;
	border:1px solid #fff;
	border-width:0 1px 1px 0;
	}
	
.nav :hover > a {
	color:#fff;
	background:#669A99;
	}

/* hide the sub levels and give them a positon absolute so that they take up no room */
.nav ul ul {
	visibility:hidden;
	position:absolute;
	top:0;
	left:150px;
	}
	
/* make the second level visible when hover on first level list OR link */
.nav ul li:hover ul, .nav ul a:hover ul { visibility:visible; }
/* keep the third level hidden when you hover on first level list OR link */
.nav ul :hover ul ul { visibility:hidden; }
/* keep the fourth level hidden when you hover on second level list OR link */
.nav ul :hover ul :hover ul ul { visibility:hidden; }
/* make the third level visible when you hover over second level list OR link */
.nav ul :hover ul :hover ul { visibility:visible; }
/* make the fourth level visible when you hover over third level list OR link */
.nav ul :hover ul :hover ul :hover ul { visibility:visible; }