/* 字体链接样式 */
td.firstLevelMenuClass a:link {color: #3E8BAC text-decoration: none} /* 未访问的链接 */
td.firstLevelMenuClass a:visited {color: #FFFFFF text-decoration: none} /* 已访问的链接 */
td.firstLevelMenuClass a:hover {color: #FFFFFF} /* 鼠标移动到链接上 */
td.firstLevelMenuClass a:active {color: #FFFFFF} /* 选定的链接 */
/* 鼠标事件背景样式 */
td.firstLevelMenuClass:hover {background-image: url(../../Public/img/menu_first_down_bg.gif) } /* 鼠标移动到链接上 */
td.<span style="color:#cc0000">firstLevelMenuClassHover</span>{background-image: url(../../Public/img/menu_first_down_bg.gif) }
td.firstLevelMenuClass{background-image: url(../../Public/img/head_menu_center.gif) }
JS:
[javascript] view plain copy
/*
* 取得对应类和标签的HTML元素
* clsName:给定类名
* tagName：给定的HTML元素，如果为任意 tagName='*'
*
*/
function getElementsByClassName(clsName, tagName) {
var ClassElements = []
selElements = document.getElementsByTagName(tagName)
for (var i = 0 i < selElements.length i++) {
if (selElements[i].className == clsName) {
ClassElements[ClassElements.length] = selElements[i]
}
}
return ClassElements
}
//通过改变元素class名达到间接改变背景样式
function onFirstMenuChangeBg(e) {
//先清除已经改变的元素背景样式
var getElements = getElementsByClassName('<span style="color:#cc0000">firstLevelMenuClassHover</span>', 'td')
for (var i = 0 i < getElements.length i++) {
getElements[i].className = "firstLevelMenuClass"
}
//设置鼠标点击元素背景样式
e.className = "firstLevelMenuClassHover"
}
HTML:
[html] view plain copy
<td class="firstLevelMenuClass" id="firstLevelMenu0" onclick="onFirstMenuChangeBg(this)" >
<a href='#'>测试0</a>
</td>
<td class="firstLevelMenuClass" id="firstLevelMenu1" onclick="onFirstMenuChangeBg(this)" >
<a href='#'>测试1</a>
</td>
<td class="firstLevelMenuClass" id="firstLevelMenu2" onclick="onFirstMenuChangeBg(this)" >
<a href='#'>测试2</a>
</td>
CSS3 有一个 :target 属性
这是一个简单的DEMO 高级用法可以再百度搜索：
<!DOCTYPE html><html>
<head>
<style>
:target {
border: 2px solid #D4D4D4
background-color: #e5eecc
}
</style>
</head>
<body>
<h1>This is a heading</h1>
<p><a href="#news1">Jump to New content 1</a></p>
<p><a href="#news2">Jump to New content 2</a></p>
<p>Click on the links above and the :target selector highlight the current active HTML anchor.</p>
<p id="news1"><b>New content 1...</b></p>
<p id="news2"><b>New content 2...</b></p>
<p><b>Note:</b> Internet Explorer 8 and earlier versions do not support the :target selector.</p>
</body>
</html>
