帮我看看这段javascript什么意思好么/？谢谢
是个点击广告才能下载的东西，我也想用，但看不懂这段代码，还请高手们解释^_^
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0041)
http://down.19xz.com/down.asp?id=688&no=1 -->
<HTML><HEAD><TITLE>软件下载</TITLE>
<SCRIPT language=JavaScript type=text/javascript>
<!--
function will() {
if (event.srcElement.tagName=='A'||event.srcElement.tagName=='IMG') {
window.focus();
oUrl.style.display = "";
yAd.style.display = "none";
}
}
//-->
</SCRIPT>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2900.2523" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
<TABLE height=289 width="100%" align=center border=0>
<TBODY>
<TR>
<SCRIPT language=JAVASCRIPT><!--
if (top.location != self.location)top.location=self.location;
// --></SCRIPT>
<TD height=38>
<DIV align=center><FONT color=#ff0000 size=4>下载提示</FONT><BR><BR><FONT
color=#ff0000 size=4>免费下载用户必须按照下面的提示才能获得软件下载地址</FONT> </DIV></TD></TR>
<TR>
<TD height=38><BR>
<TABLE width="95%" align=center border=0>
<TBODY>
<TR>
<TD>
<DIV align=center><FONT color=#ff0000
size=3>第一步，点击下面上网助手广告</FONT></DIV></TD></TR>
<TR>
<TD>
<DIV align=center>
<SCRIPT language=JavaScript src="软件下载.files/adv1_3.htm"
type=text/JavaScript></SCRIPT>
</DIV></TD></TR>
<TR>
<TD>
<DIV align=center><FONT color=#ff0000 size=3><BR>第二步，点击下面文字( 汽车 交友
人才 )任意一个</FONT></DIV></TD></TR>
<TR>
<TD>
<DIV align=center>
<DIV id=yAd>
<SCRIPT language=javascript
src="软件下载.files/sel_140_75.htm"></SCRIPT>
</DIV>
<DIV id=oUrl style="DISPLAY: none"><A
href="http://down.19xz.com/down2.asp?id=688&no=1"><B><FONT
size=2>下载地址--点击开始下载</FONT></B></A></DIV></DIV></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE></BODY></HTML>
[注意]传递专业知识、拓宽行业人脉——看雪讲师团队等你加入！
