半透明的层怎么做？"

hmilyzhang

<STRONG><FONT size=2><FONT face=Arial><SPAN class=smalltxt twffan="done"><SPAN class=bold twffan="done">半透明的层怎么做？"</SPAN></SPAN><BR><BR></FONT></FONT></STRONG><SPAN style="FONT-SIZE: 12px" twffan="done">先定义一个CSS样式：<BR>&amp;lt;style type="text/css"&amp;gt;<BR>&amp;lt;!--<BR>&#46;halfalpha { background-color: #000000; filter: Alpha(Opacity=50)}<BR>--&amp;gt;<BR>&amp;lt;/style&amp;gt;<BR><BR>然后应用在层标签里：<BR>&amp;lt;div class="halfalpha"&amp;gt; </SPAN>