phpcms搜索怎么做？

<form name="search_form1" target="_blank" onsubmit="return go(this)"> 
<input name="q" id="q" 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 name="word" type="hidden" value=0> 
<INPUT name="myselectvalue" type="hidden" value=0> 
<INPUT name="tn" type="hidden" value="sayyes"> 
<INPUT name="cl" type="hidden" value="3"> 
<input type="hidden" name="m" value="search"/> 
<input type="hidden" name="c" value="index"/> 
<input type="hidden" name="a" value="init"/> 
<input type="hidden" name="typeid" value="1"/> 
<input type="hidden" name="siteid" value="1"/> 
<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</FONT> 
<INPUT name="myselect" onclick=javascript:this.form.myselectvalue.value=1; type=radio value=1> 
<FONT color=#ff0000 style="FONT-SIZE: 12px">站内</FONT> 
<input type="submit" value="搜索"> 
</form> 
<SCRIPT language=javascript> 
<!-- 
function go(formname) 
{ 
var url = "http://www.baidu.com/baidu"; 
formname.method = "get"; 
if (formname.myselectvalue.value == "1") { 
url="{APP_PATH}index.php"; 
} 
document.search_form1.word.value = document.search_form1.q.value; 
formname.action = url; 
return true; 
} 
//--> 
</SCRIPT>