以下代码可以直接加到版块中，尺寸经过调整的

一、新浪搜索源代码：

<iframe id=adframe1 marginwidth=0 marginheight=0 frameborder=0 scrolling=no src='http://pfp.sina.com.cn/partner/unionSearchBox.html?width=145&id=15134' width=145 height=120></iframe>

二、百度搜索源代码：

<iframe id="baiduframe" border="0" vspace="0" hspace="0" marginwidth="0" marginheight="0"
  framespacing="0" frameborder="0" scrolling="no" width="140" height="75"
  src="http://unstat.baidu.com/bdun.bsc?tn=aswis8&csid=105&rkcs=0&bgcr=E1FDE8&ftcr=006633&rk=1&bd=1&bdas=0">
</iframe>

三、google搜索源代码：
1、加在版块中（尺寸经过调整）

<!-- Search Google -->
<center>
<form method="get" action="http://www.google.com/custom" target="google_window">
<table bgcolor="#cccccc">
<tr><td nowrap="nowrap" valign="top" align="left" height="32">
<a href="http://www.google.com/">
<img src="http://www.google.com/logos/Logo_25gry.gif" border="0" alt="Google" align="middle"></img></a>
<br/>
<input type="text" name="q" size="20" maxlength="255" value=""></input>
</td></tr>
<tr><td valign="top" align="left">
<input type="submit" name="sa" value="搜索"></input>
<input type="hidden" name="client" value="pub-1424916652430494"></input>
<input type="hidden" name="forid" value="1"></input>
<input type="hidden" name="ie" value="GB2312"></input>
<input type="hidden" name="oe" value="GB2312"></input>
<input type="hidden" name="cof" value="GALT:#008000;GL:1;DIV:#336699;VLC:663399;AH:center;BGC:FFFFFF;LBGC:336699;ALC:0000FF;LC:0000FF;T:000000;GFNT:0000FF;GIMP:0000FF;FORID:1;"></input>
<input type="hidden" name="hl" value="zh-CN"></input>
</td></tr></table>
</form>
</center>
<!-- Search Google -->

2、横幅广告样式（778宽）

<!-- Search Google -->
<center>
<form method="get" action="http://www.google.com/custom" target="google_window">
<table bgcolor="#cccccc">
<tr><td nowrap="nowrap" valign="top" align="left" height="32">
<a href="http://www.google.com/">
<img src="http://www.google.com/logos/Logo_25gry.gif" border="0" alt="Google" align="middle"></img></a>
<input type="text" name="q" size="105" maxlength="255" value=""></input>
<input type="submit" name="sa" value="搜索"></input>
<input type="hidden" name="client" value="pub-1424916652430494"></input>
<input type="hidden" name="forid" value="1"></input>
<input type="hidden" name="ie" value="GB2312"></input>
<input type="hidden" name="oe" value="GB2312"></input>
<input type="hidden" name="cof" value="GALT:#008000;GL:1;DIV:#336699;VLC:663399;AH:center;BGC:FFFFFF;LBGC:336699;ALC:0000FF;LC:0000FF;T:000000;GFNT:0000FF;GIMP:0000FF;FORID:1;"></input>
<input type="hidden" name="hl" value="zh-CN"></input>
</td></tr></table>
</form>
</center>
<!-- Search Google -->

四、google竞价广告代码：横幅广告（728＊90）

<script type="text/javascript"><!--
google_ad_client = "pub-1424916652430494";
google_alternate_ad_url = "http://www.aswis.cn/gg/1.swf";
google_ad_width = 728;
google_ad_height = 90;
google_ad_format = "728x90_as";
google_ad_channel ="";
google_page_url = document.location;
//--></script>
<script type="text/javascript"
  src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>