#header { height:50px; position:relative;background: lightgray}
#nav { margin:0px; padding:0px; position:absolute; top: 5px; display:block;}
#nav > li{ list-style-type:none; float:left; display:block; margin:0px 10px; 
position:relative; padding:10px; width:auto; text-decoration:none}
#nav > li:hover ul { display:block; }
#nav > li:hover { background-color:#808080; -moz-border-radius:10px; -webkit-border-radius:10px; }
#nav li ul { margin:0px; padding:0px; display:none;}
#nav li ul li { list-style-type:none; margin:10px 0 0 0;}
#nav li a { display:block; padding:0;text-decoration:none; font-family:Tahoma}
#nav li ul li a { display:block; padding:5px 10px; color:#A2E200; text-decoration:none;}
#nav li ul li:hover a { background-color:#606060; -moz-border-radius:5px; -webkit-border-radius:5px;}
#nav li span { cursor:pointer; margin:0px 10px; font-weight:bold; }