.menu{
	position:relative;
	z-index:100;
}

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

/* float the list to make it horizontal and a relative positon so that you can control the dropdown menu positon */
.menu li{
	float:left;
	position:relative;
}

/* hide the sub levels and give them a positon absolute so that they take up no room */
.menu ul ul{
	visibility:hidden;
	position:absolute;
}

/* make the second level visible when hover on first level list OR link */
.menu ul li:hover ul,.menu ul a:hover ul{
	visibility:visible;
}

/* keep the third level hidden when you hover on first level list OR link */
.menu ul :hover ul ul{
	visibility:hidden;
}

/* make the third level visible when you hover over second level list OR link */
.menu ul :hover ul :hover ul{ 
	visibility:visible;
}