本文实例讲述了js实现九宫格图片半透明渐显特效的方法。分享给大家供大家参考。具体实现方法如下：
<title>九宫格图片半透明渐显效果</title>
<body>
<STYLE type=text/css>.invisible {
FILTER: alpha(opacity=0)
}
</STYLE>
<SCRIPT language=JavaScript1.2>
<!--
function high(which2){
theobject=which2
highlighting=setInterval("highlightit(theobject)",50)
}
function low(which2){
clearInterval(highlighting)
which2.filters.alpha.opacity=0
}
function highlightit(cur2){
if (cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=10
else if (window.highlighting)
clearInterval(highlighting)
}
//-->
</SCRIPT>
<TABLE borderColor=#999999 cellSpacing=8 cellPadding=0 width=302
border=0><TBODY>
<TR>
<TD width=90 background=text1.gif bgColor=#db4d0e
height=90><A href=""><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m01.jpg" border=0 width=180px height=135px></A></TD>
<TD width=90 background=text2.gif bgColor=#ff9f07><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m02.jpg" border=0 width=180px height=135px></A></TD>
<TD width=90 background=text3.gif bgColor=#ff9f07><A
href=""><IMG class=invisible
onmouseover=high(this) onmouseout=low(this) src="/images/m03.jpg"
border=0 width=180px height=135px></A></TD></TR>
<TR>
<TD background=text4.gif bgColor=#ff9f07><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m04.jpg" border=0 width=180px height=135px></A></TD>
<TD background=text5.gif bgColor=#a5d523><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m05.jpg" border=0 width=180px height=135px></A></TD>
<TD background=text6.gif bgColor=#c56e19><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m06.jpg" border=0 width=180px height=135px></A></TD></TR>
<TR>
<TD background=text12.gif bgColor=#ff9f07><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m07.jpg" border=0 width=180px height=135px></A></TD>
<TD background=text8.gif bgColor=#c56e19><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this) src="/images/m08.jpg"
border=0 width=180px height=135px></A></TD>
<TD background=text7.gif bgColor=#c56e19><A
href="/"><IMG
class=invisible onmouseover=high(this) onmouseout=low(this)
src="/images/m09.jpg" border=0 width=180px height=135px></A></TD></TR></TBODY></TABLE>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。