菜鸟请教！！！！！！！！！！
<html> <body> <form runat="server"> 语文：<asp:textbox runat="server" id="chinese"/><p> 数学：<asp:textbox runat="server" id="math"/><p> 英语：<asp:textbox runat="server" id="english"/><p> <asp:button runat="server" text="计算平均值" onclick="botton_click"/> </form> </body>
</html>
<script language="vb" runat="server"> sub button_onclick(sender as object,e as eventargs) dim totle totle=val(chinese.text)+val(math.text)+val(english.text) response.write("平均数："&totle/3) end sub </script>
请高手赐教！！该怎么改
