move sub navigation with resizing window

[kharku]

hi,
this is my navigation


when i resize my window:


and this is my css code:

#nav{
	height: 37px;
	width: 960px;
	margin: 10px 0 0 0; padding: 0;
	background: url(../images/menu-bg.png);
}

#nav li{
	height: 37px;
	margin: 0; padding:0 30px 0 0 ;
	float: right;
	list-style-type: none;
}

#nav li a{
	margin:0 ;
	text-decoration: none;
	color: white;
	font-size: 23px;
	display: block;
	padding: 2px 0 0 0;
}

#nav li ul{
	margin: 0;
	padding: 0;
	height: 25px;
	position: absolute;
	top: 221px;
	right: 170px;
	width: 960px;
	background: #8ba88f;
	float: right;
}

#nav li ul a{
	margin:0; padding:0;
	height: 25px;
	font-size: 1.2em;
	display: block;
}