设计网页怎样对百度的搜索框进行连接？

<%
a=request("a")
if a<>"" then
response.Redirect("http://www.baidu.com/s?wd="&a)
end if
%>
<form method="post" action="">

<input type=text name=a id=kw size=42 maxlength=100>

<input type="submit" name="Submit" value="提交" />

</form>

tou teng