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       body{font-size=9pt}
	        TH{FONT-SIZE: 9pt}
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<title>随机广告条显示</title>
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    <td width="50%" bgcolor="#006DA2"><!--webbot bot="ImageMap" rectangle="(8,2) (105,34) http://www.pageone.yeah.net" src="../images/jlogo3.GIF" alt="网页设计师" border="0" startspan --><MAP NAME="FrontPageMap"><AREA SHAPE="RECT" COORDS="8, 2, 105, 34" HREF="http://www.pageone.yeah.net"></MAP><a href="../_vti_bin/shtml.exe/js/js40.htm/map"><img ismap usemap="#FrontPageMap" border="0" height="36" alt="网页设计师" src="../images/jlogo3.GIF" width="111"></a><!--webbot bot="ImageMap" endspan i-checksum="13178" --></td>
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        <td width="16%"><font color="#ffff80">★</font></td>
        <td width="84%"><font face="Arial"><a href="index.htm">JAVASCRIPT</a></font></td>
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        <td width="12%" bgcolor="#B7D1F4"><p align="center"><font color="#FF8000">名称</font></td>
        <td width="88%" bgcolor="#FFFFFF"><p align="center">随机广告条显示</td>
      </tr>
      <tr>
        <td width="12%" bgcolor="#B7D1F4" valign="top"><p align="center"><font color="#FF8000">实例</font></td>
        <td width="88%"><table border="1" width="100%" bordercolor="#B7D1F4" cellspacing="0" cellpadding="0">
          <tr>
            <td width="100%"><p align="center"><script LANGUAGE="JavaScript">
<!-- Begin
var how_many_ads = 3;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt="这里是广告条一的文字说明";
url="http://www.yourlink1.com";
alt="网站名称一";
banner="image1.gif";
width="140";
height="40";
}
if (ad==2) {
txt="这里是广告条二的文字说明";
url="http://www.yourlink2.com/";
alt="网站名称二";
banner="image2.gif";
width="140";
height="40";
}
if (ad==3) {
txt="这里是广告条三的文字说明"; 
url="http://www.yourlink3.com";
alt="网站名称三";
banner="image3.gif";
width="140";
height="40";
}
document.write('<center>');
document.write('<a href=\"' + url + '\" target=\"_top\">');
document.write('<img src=\"' + banner + '\" width=')
document.write(width + ' height=' + height + ' ');
document.write('alt=\"' + alt + '\" border=0><br>');
document.write('<small>' + txt + '</small></a>');
document.write('</center>');
// End -->
</script></p>
            <p align="center"><br>
            <font color="#0080C0">刷新本页你会看到随机的不同广告图片</font></td>
          </tr>
        </table>
        </td>
      </tr>
      <tr>
        <td width="12%" bgcolor="#B7D1F4" valign="top"><p align="center"><font color="#FF8000">教程</font></td>
        <td width="88%"><table border="1" width="100%" cellspacing="0" cellpadding="0" bordercolor="#B7D1F4">
          <tr>
            <td width="100%" bgcolor="#FFFFFF"><br>
            <p>第一步:拷贝下面的代码到你的html文件的&lt;body&gt;和&lt;/body&gt;之间;</p>
            <blockquote>
              <form name="copy1">
                <p><textarea rows="4" name="S1" cols="39" onMouseOver="this.focus()" onFocus="this.select()">&lt;script LANGUAGE=&quot;JavaScript&quot;&gt;
<!-- Beginvar how_many_ads = 3;var now = new Date()var sec = now.getSeconds()var ad = sec % how_many_ads;ad +=1;if (ad==1) {txt="这里是广告条一的文字说明";url="http://www.yourlink1.com";alt="网站名称一";banner="image1.gif";width="140";height="40";}if (ad==2) {txt="这里是广告条二的文字说明";url="http://www.yourlink2.com/";alt="网站名称二";banner="image2.gif";width="140";height="40";}if (ad==3) {txt="这里是广告条三的文字说明"; url="http://www.yourlink3.com";alt="网站名称三";banner="image3.gif";width="140";height="40";}document.write('<center>');document.write('<a href=\"' + url + '\" target=\"_top\">');document.write('<img src=\"' + banner + '\" width=')document.write(width + ' height=' + height + ' ');document.write('alt=\"' + alt + '\" border=0><br>');document.write('<small>' + txt + '</small></a>');document.write('</center>');// End -->
&lt;/script&gt;</textarea></p>
              </form>
            </blockquote>
            <p>说明:修改代码中如下部分:<br>
            <br>
            <font color="#008080">txt=&quot;这里是广告条一的文字说明&quot;;<br>
            url=<a href="http://www.yourlink1.com">&quot;http://www.yourlink1.com&quot;</a>; </font><font color="#000000">这里改为你的连接网址</font><font color="#008080"><br>
            alt=&quot;网站名称一&quot;;  </font><font color="#000000">图片的注释</font><font color="#008080"><br>
            banner=&quot;image1.gif&quot;;  </font><font color="#000000">你的图片的路径,可以用http://www.xxx.com/xxx.gif形式</font><font color="#008080"><br>
            width=&quot;140&quot;;  </font><font color="#000000">图片的宽</font><font color="#008080"><br>
            height=&quot;40&quot;;  </font><font color="#000000">图片的高</font></p>
            <p> </td>
          </tr>
        </table>
        </td>
      </tr>
      <tr>
        <td width="12%" bgcolor="#B7D1F4" valign="top"><p align="center"><font color="#FF8000">下载</font></td>
        <td width="88%" bgcolor="#FFFFFF"> 请到<a href="../download/index.htm">下载中心</a></td>
      </tr>
      <tr>
        <td width="12%" bgcolor="#B7D1F4" valign="top"><p align="center"><font color="#FF8000">版权</font></td>
        <td width="88%" bgcolor="#FFFFFF"> 阿捷编辑整理</td>
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    <a href="index3.htm">上一页</a> <a href="index3.htm">下一页</a> <a href="js40.htm#top">回到页首</a></td>
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    <td width="79%" height="3" align="center" colspan="2"><font color="#FFFFFF">.</font></td>
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    <td width="52%" height="2">《<a href="http://pageone.yeah.net">网页设计师</a>》 
    阿捷制作 版权所有</td>
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    <td width="79%" height="4" align="center" colspan="2">本站教程免费学习,引用请注明出处,禁止抄袭。</td>
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