<div class="slidervideo">
<a href="http://www.youtube.com/embed/dxLtlumu8X4" target="_blank" rel="external nofollow" target="_blank"><img src="images/freezevideo.png" /></a>
</div>
css代码:
.slidervideo a{
z-index:99999999999;
opacity:0.7;
filter:alpha(opacity=70);
}
.slidervideo a:hover{
opacity:1;
filter:alpha(opacity=100);
}