〈img src="图片地址" style="filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)" onmouseover="this.style.filter='progid:DXImageTransform.Microsoft.BasicImage(grayscale=0)'" onmouseout="this.style.filter='progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)'">
如果想让整个网站的图片变灰，在样式表中加入
img{filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);}
按纽变灰
INPUT { border:1px solid #999; filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);}