拡張可能なメニューがあります。
IE7 では、上下に白い隙間ができます。IE8では一番上。さまざまな提案を試みましたが、何も役に立たないようです。
ここでサイトを見ることができます: http://dffernandez.com/client_review_files/wap/
問題は「インフラストラクチャ」ボタンにあります（2番目のもの）
前もって感謝します。
HTML
<!--Aside left nav-->
<div id="secondary-nav">
<ul>
<li class="leaf-first"><a href="#"><img src="img/left-aside/sec-nav-arrow.png" width="21" height="21" class="sec-nav-arrow" alt="">airport & location details</a></li>
<li class="expand-top"></li> <!--Extra li so it can expand background-->
<li class="leaf-expand"><a href="#">infraestructure</a>
<!--Submenu-->
<ul class="asidel-submenu">
<li class="leaf-first"><a href="#">Current Tenants</a></li>
<li class="leaf"><a href="#">Industry Especific Info</a></li>
<li class="leaf"><a href="#">Aerospace</a></li>
<li class="leaf"><a href="#">Unmanned Aerial Vehicles</a></li>
<li class="leaf"><a href="#">Repair</a></li>
<li class="leaf-las"><a href="#">Summary of Master Plan</a></li>
</ul> <!--Submenu ends-->
</li> <!--Expand-->
<li class="expand-bottom"></li> <!--Extra li so it can expand background-->
<li class="leaf"><a href="#"><img src="img/left-aside/sec-nav-arrow.png" width="21" height="21" class="sec-nav-arrow" alt="">communities</a></li>
<li class="leaf"><a href="#"><img src="img/left-aside/sec-nav-arrow.png" width="21" height="21" class="sec-nav-arrow" alt="">newsroom</a></li>
<li class="leaf-last"><a href="#"><img src="img/left-aside/sec-nav-arrow.png" width="21" height="21" class="sec-nav-arrow" alt="">location map</a></li>
</ul>
</div> <!--Aside left nav-->
CSS
/*secondary nav*/
#aside-left #secondary-nav li{
list-style: url(none) none;
margin-bottom: 13px;
}
#aside-left #secondary-nav li a {
height: 31px;
display: block;
background: url(../img/left-aside/sec-nav-back.png);
text-transform: uppercase;
text-decoration: none;
padding-top: 12px;
padding-left: 12px;
}
#aside-left #secondary-nav ul .leaf-expand a {
background: url(../img/left-aside/sec-nav-expand-back.png) repeat-y;
height: auto;
padding-top: 6px;
padding-bottom: 6px;
}
#aside-left #secondary-nav ul .leaf-expand img { /*controls the arrow position next to the expand. For changing the image go to js/script.js*/
display: block;
float: left;
margin-right: 6px;
padding-left: 12px;
margin-top: 3px;
}
#aside-left #secondary-nav ul .expand-top {
background: url(../img/left-aside/sec-nav-expand-back-top.png) no-repeat;
height: 7px;
margin-bottom: 0px;
}
#aside-left #secondary-nav ul .expand-bottom {
background: url(../img/left-aside/sec-nav-expand-back-bottom.png) no-repeat;
height: 6px;
margin-top: -13px;
}
#aside-left #secondary-nav .asidel-submenu {
padding-left: 39px;
padding-right: 12px;
padding-bottom: 9px;
background: url(../img/left-aside/sec-nav-expand-back.png) repeat-y;
}
#aside-left #secondary-nav .asidel-submenu li {
list-style: disc inside;
margin-bottom: 3px;
color: #0073BC;
}
#aside-left #secondary-nav .asidel-submenu li a {
text-transform: none;
display: inline;
padding-left: 0px;
}
#aside-left #secondary-nav .sec-nav-arrow {
margin-right: 6px;
display: block;
float: left;
margin-top: -3px;
}