how to validate it by jquery

<form id="myForm" runat="server">
username
<asp:TextBox ID="txtuser" runat="server">
</asp:TextBox>
Password
<asp:TextBox ID="txtpass" TextMode="Password" runat="server">
</asp:TextBox>
<asp:Button ID="btnsubmit" Text="submit" runat="server" OnClientClick="Val()" />
</form>
anybody says that how to validate it.
if anyone have any book for web development [especially jquery]
so send it to me @
anirudhakumar.gupta@gmail.com
please thank in advanced for reply answer
thanks optional if you give me some ebook

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