#nav_bar{
    float: left;
    width: 800px;
    height: 37px;
    margin: 0px;
    padding: 0px;
    margin-top:0px;
    background-color: #000000;
    background-image: url(../images/barra_navegacion.jpg);
}





#nav, #nav ul{
	margin:0;
	padding:0;
	list-style-type:none;
	list-style-position:outside;
	position:relative;
	line-height:37px;
}

#nav a{
	display:block;
	color:#FFFFFF;
	text-decoration:none;
	background-attachment: scroll;
	background-repeat: repeat-x;
	background-position: left top;
	font-weight: normal;
	border-top-width: 0px;
	border-right-width: 1px;
	border-bottom-width: 0px;
	border-left-width: 0px;
	border-top-style: inset;
	border-right-style: inset;
	border-bottom-style: inset;
	border-left-style: inset;
	border-top-color: #333333;
	border-right-color: #333333;
	border-bottom-color: #333333;
	border-left-color: #333333;
	padding-top: 0px;
	padding-right: 16px;
	padding-bottom: 0px;
	padding-left: 16px;
	letter-spacing: 0.088em;
	/* letter-spacing: 0.096em;*/
}

#nav a:hover{
	color:#FFFFFF;
	background-image: url(../images/arrow_down.png);
	background-attachment: scroll;
	background-repeat: no-repeat;
	background-position: center top;
}

#nav li{
	float:left;
	position:relative;

		
}

#menu_subitem {
    width: 188px;
}

#nav ul {
position:absolute;
display:none;
width:12em;
top:37px;

}
#nav_bar #nav .sub_menu_li {
	background-color: #99CC33;

}

#nav li ul {
        _width:188px;
}

#nav li ul a{
	width:155px;
    _width:188px;
	height:auto;
	float:left;
	background-color:#333333;
	border-bottom-color: #2B2B2B;
	border-bottom-width:1px;
}

#nav ul ul{
top:auto;

}	

#nav li ul ul {
	left:12em;
	margin-top: 10px;
	margin-right: 0;
	margin-bottom: 0;
	margin-left: 10px;
	
}