HTML 鼠标出入DIV事件

<input type="button" class="bg-gre c-wh btn fl mar-t-5" value="促销活动详情" onmouseover="CXHD.style.display='block'" onmouseout="CXHD.style.display='none'">

鼠标进入：onmouseover="over()"

鼠标离开：onmouseout="out()"