用iframe解决Applet遮挡菜单

Applet在网页中默认为最上层显示，用iframe可以解决此问题。

 

下面是解决applet遮挡下拉菜单的实例：

 

只需在需要的菜单上面添加一个空的iframe,注意高度设定为menu显示时的实际高度

<ul class="menu" id="menu">
		<li id="m_1" class='m_li'><a href="${pageContext.request.contextPath}/" class="dh"><fmt:message key="webshop.menu.home"/></a></li>
		<!-- <li class="m_line"><img src="${pageContext.request.contextPath}/images/dh-line.jpg" border="0"/></li> -->
		<li id="m_2" class='m_li'><a href="#" class="dh"><fmt:message key="webshop.menu.about"/></a>
			<ul>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=2"><fmt:message key="webshop.menu.about.information"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=3"><fmt:message key="webshop.menu.about.accolades"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=4"><fmt:message key="webshop.menu.about.history"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=5"><fmt:message key="webshop.menu.about.culture"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=6"><fmt:message key="webshop.menu.about.structure"/></a></li>
			</ul>
		</li>
		<!-- <li class="m_line"><img src="${pageContext.request.contextPath}/images/dh-line.jpg" border="0"/></li> -->
		<li id="m_3" class='m_li'><a href="#" class="dh"><fmt:message key="webshop.menu.rd"/></a>
			<ul>
				<iframe class="menu_iframe" height="81px" frameborder="0"></iframe>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=8"><fmt:message key="webshop.menu.rd.research"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=9"><fmt:message key="webshop.menu.rd.development"/></a></li>
				<li><a href="${pageContext.request.contextPath}/artifact/detail.do?menuId=10"><fmt:message key="webshop.menu.rd.quanlity"/></a></li>
			</ul>
		</li>
</ul>

 

   (width为实际菜单菜单宽度)

.menu_iframe{position:absolute; visibility:inherit;top:0px;left:0px; width:125px; z-index:-1; filter: Alpha(Opacity=0);}

 

   CSS的用途：

   visiblility : inherit  --继承父对象的可见性

   position:absolute; --要激活对象的绝对(absolute)定位，必须指定 left ， right ， top ， bottom 属性中的至少一个.

    filter: Alpha(Opacity=0)--背景设定为透明.

 

搞了大半天才发现如此简单，晕...

 

友情提示：感谢X...哥的指点.  Eric：你可以转载了!  哈。。。:-)  果真瘦瘦啊！