[求助]怎样实现局部刷新?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body>
<form name="form1" method="post" action="">
<select name="ss" onChange="javascript:location.href=this.options[selectedIndex].value" onchange=t();>
<option value="?lx=1">1</option>
<option value="?lx=2">2</option>
<option value="?lx=3">3</option>
<option value="?lx=4">4</option>
<option value="?lx=5">5</option>
</select>
<%
lx=request.querystring("lx")
%>
<input type="text" name="textfield" value="<%=lx%>">
</form>
</body>
</html>
我是菜鸟,谢谢.