为所有的页面元素添加 :hover 属性

FireFox 下，所有的页面元素都有 :hover 属性，当鼠标悬停时，可以变换样式，能给用户一个好的体验。但是 IE 下面，只有超级链接标签（A）才具备此属性，本文介绍的是通过 expression 设置，解决 IE 的这一问题。

为所有的页面元素添加 :hover 属性 – 示例

<style type="text/css" media="projection, screen">
.whatever {
	background: #808080;
	padding: 20px;
}
.whatever:hover, .whateverhover {
	background: #eaeaea;
}
</style>

<!-- Additional IE/Win specific style sheet (Conditional Comments) -->
<!--[if lte IE 6]>
<style type="text/css" media="projection, screen">
.whatever {
	behavior: expression(
		this.onmouseover = new Function("this.className += ' whateverhover';"),
		this.onmouseout = new Function("this.className = this.className.replace(' whateverhover', '');"),
		this.style.behavior = null
	);
}
/*.whatever {
	background-color: expression(
		!this.js ? (this.js = 1,
			this.onmouseover = new Function("this.className += ' whateverhover';"),
			this.onmouseout = new Function("this.className = this.className.replace(' whateverhover', '');")
			) : false);
	);
}*/
/*.whatever {
	background-color: expression(
		this.onmouseover = new Function("this.className += ' whateverhover';"),
		this.onmouseout = new Function("this.className = this.className.replace('whateverhover', '');")
	);
}*/
</style>
<![endif]-->