投影效果，兼容IE6

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.zxx_shade_image img{margin:-1px 0 0 -2px; padding-bottom:1px; background:#808080; border-width:1px 1px 0; border-style:solid; border-color:#eaeaea #808080 transparent #eaeaea; float:left; position:relative;}

<a href="#nogo" class="zxx_shade_image">
    <img src="http://image.zhangxinxu.com/image/study/mm.jpg" />
</a>