内置百度搜索的代码

第一种：纯搜索

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<form action="http://www.baidu.com/baidu" target="_blank">
<table bgcolor="#FFFFFF"><tr><td>
<input name=tn type=hidden value=baidu>
<a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" alt="Baidu" align="bottom" border="0"></a>
<input type=text name=word size=30>
<input type="submit" value="百度搜索">
</td></tr></table>
</form>

 

第二种：可以选择搜索类型，如音乐、新闻等

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<SCRIPT language=javascript>
function gowhere1(formname)
{
 var url;
 if (formname.myselectvalue.value == "0")
 {
  url = "http://www.baidu.com/baidu";
  document.search_form1.tn.value = "baidu";
  formname.method = "get";
 }
 if (formname.myselectvalue.value == "1")
 {
  url = "http://mp3.baidu.com/m";
  document.search_form1.tn.value = "baidump3";
  document.search_form1.ct.value = "134217728";
  document.search_form1.lm.value = "-1";
 }

 if (formname.myselectvalue.value == "4")
 {
  document.search_form1.tn.value = "news";
  document.search_form1.cl.value = "2";
  document.search_form1.rn.value = "20";
  url = "http://news.baidu.com/ns";
 }
 if (formname.myselectvalue.value == "5")
 {
  document.search_form1.tn.value = "baiduiamge";
  document.search_form1.ct.value = "201326592";
  document.search_form1.cl.value = "2";
  document.search_form1.lm.value = "-1";
  url = "http://image.baidu.com/i";
}
if (formname.myselectvalue.value == "6")
 {
  url = "http://post.baidu.com/f";
  document.search_form1.tn.value = "baiduPostSearch";
  document.search_form1.ct.value = "352321536";
  document.search_form1.rn.value = "10";
  document.search_form1.lm.value = "65536";
 }

  formname.action = url;
 return true;
}
</SCRIPT>
<form name="search_form1" target="_blank" onsubmit="return gowhere1(this)">
<table width="460" height="60" border="0" bgcolor="#FFFFFF" cellpadding="0" cellspacing="0" style=font-family:宋体><tr><td>
<TABLE width="460" height="80" border=0 cellPadding=0 cellSpacing=0>
      <INPUT name=myselectvalue type=hidden value=0>
      <INPUT name=tn type=hidden>
      <INPUT name=ct type=hidden>
      <INPUT name=lm type=hidden>
      <INPUT name=cl type=hidden>
      <INPUT name=rn type=hidden>
      <TR>
                  <TD width="8%" valign="bottom">
                    <DIV align=center><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif"
alt="Baidu" align="bottom" border="0"></a></DIV></TD>
    <TD vAlign=bottom width="92%">
<INPUT name=myselect onclick=javascript:this.form.myselectvalue.value=4; type=radio value=0>
                    <FONT color=#0000cc style="FONT-SIZE: 12px">新闻</FONT>

                   <INPUT CHECKED name=myselect onclick=javascript:this.form.myselectvalue.value=0; type=radio value=0>
                    <SPAN class=f12><FONT color=#0000cc style="FONT-SIZE: 12px">网页</FONT></SPAN>
                    <INPUT name=myselect onclick=javascript:this.form.myselectvalue.value=1; type=radio value=1>
                    <SPAN class=f12><FONT color=#0000cc style="FONT-SIZE: 12px">mp3</FONT></SPAN>
<INPUT name=myselect onclick=javascript:this.form.myselectvalue.value=6; type=radio value=0>
<FONT color=#0000cc style="FONT-SIZE: 12px">贴吧</FONT>
<INPUT name=myselect onclick=javascript:this.form.myselectvalue.value=5; type=radio value=0>
                    <FONT color=#0000cc style="FONT-SIZE: 12px">图片</FONT>

                    <TABLE align=right border=0 cellPadding=0 cellSpacing=0 width="100%">
                      <TBODY>
                        <TR>
                          <TD><FONT style="FONT-SIZE: 12px">
                            <input id=word name=word size="40">
                            </FONT> <input type="submit" value="百度搜索"> </TD></TR>

       </form>

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通过百度实现站内搜索功能，只需要用您的网站地址替换代码中"www.baidu.com"即可。
如果网页采用utf-8代码，则需要在代码中加入<input name=ie type=hidden value=utf-8>，否则搜索关键词会出现乱码