实现百度站内搜索的代码

<SCRIPT language=javascript>

<!--

function go(formname)

{

var url = "http://www.baidu.com/baidu";

formname.method = "get";

if (formname.myselectvalue.value == "1") {

document.search_form1.word.value = document.search_form1.word.value+" site:niceboy.cnblogs.com";

}

formname.action = url;

return true;

}

//-->

</SCRIPT>

<form name="search_form1" target="_blank" onsubmit="return go(this)">

<input name=word size="30" value="请输入关键字" onMouseOver="this.focus()" onBlur="if (value ==''){value='请输入关键字'}" onFocus="this.select()" onClick="if(this.value=='请输入关键字')this.value=''">

<input type="submit" value="搜索"><br>

<INPUT name=myselectvalue type=hidden value=0>

<INPUT name=tn type=hidden value="sayyes">

<INPUT name=cl type=hidden value="3">

<INPUT CHECKED name=myselect onclick=javascript:this.form.myselectvalue.value=0; type=radio value=0>

<FONT color=#0000cc style="FONT-SIZE: 12px">互联网

<INPUT name=myselect onclick=javascript:this.form.myselectvalue.value=1; type=radio value=1>

<FONT color=#ff0000 style="FONT-SIZE: 12px">站内

</form>