img alt="powerbookg4.jpg" src="archives/images/powerbookg4.jpg" width="250" height="60" style="-moz-opacity:0.5; filter:alpha(opacity=50);cursor:hand;" onmouseover="this.style.MozOpacity=1; this.filters.alpha.opacity=100" onmouseout="this.style.MozOpacity=0.5; this.filters.alpha.opacity=50" 在IE中需要通过"filter"来定义透明度"opacity",而在Mozilla中是可以直接解析"opacity",...
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