1分钟写个JAVASCRIPT验证,速度结贴

<%@ Page language="c#"  AutoEventWireup="false" Inherits="SimplexShop.Register" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<form id="Form1" method="post" runat="server">
<table>
<tr><td>密码</td>
<td>
<asp:TextBox ID="txtPW" runat="server" CssClass="inputstyle" TextMode="Password" MaxLength="20"></asp:TextBox><span style="color:#ff0000">*</span><span style="color:#000000; font-size:11px">请使用6-20字符</span>
</td>
</tr>
<td class="p9rednothrough" width="80%" align="left">
<asp:Button ID="btnSubmit" Runat="server" CssClass="inputstyle" Text="确认"></asp:Button>
</td></tr>
</table>
</form>
</body>
</html>