Master Page Error Coming While I Am Applying Java Script On Register.Aspx Page Which Is Inherrting Master Page

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="REGISTER.ASPX.cs" Inherits="Default4" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">



    <style type="text/css">
    .style18
    {
        width: 100%;
        background-color: #FFFF66;
    }
    .style19
    {
        font-size: large;
        font-weight: bold;
        color: #000099;
    }
    </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

    <table class="style18">
    <tr>
        <td class="style19">
            FIRSTNAME</td>
        <td>
            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            SECONDNAME</td>
        <td>
            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            MOBILENUMBER</td>
        <td>
            <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            ADDRESSS</td>
        <td>
            <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            EMAILID</td>
        <td>
            <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
            <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
                ControlToValidate="TextBox5" ErrorMessage="enter valid expression"
                Font-Bold="True" Font-Size="Small" ForeColor="#000099"
                ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator>
        </td>
    </tr>
    <tr>
        <td class="style19">
            PASSWORD</td>
        <td>
            <asp:TextBox ID="TextBox6" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            CONFIRMPASSWORD</td>
        <td>
            <asp:TextBox ID="TextBox7" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td class="style19">
            QUERY</td>
        <td>
            <asp:TextBox ID="TextBox8" runat="server"></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td colspan="2">
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
            &nbsp;<asp:Button ID="Button1" runat="server" Font-Bold="True" Font-Size="Large"
                ForeColor="#660066" Height="35px" Text="REGISTER" Width="105px"
                onclick="Button1_Click1" />
        </td>
    </tr>
    <tr>
        <td>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server"
                ConnectionString="<%$ ConnectionStrings:touchConnectionString %>"
                SelectCommand="SELECT * FROM [emp]"></asp:SqlDataSource>
        </td>
        <td>
            &nbsp;</td>
    </tr>
    <tr>
        <td>
            &nbsp;</td>
        <td>
            &nbsp;</td>
    </tr>
    <tr>
        <td>
            &nbsp;</td>
        <td>
            &nbsp;</td>
    </tr>
    <tr>
        <td>
            &nbsp;</td>
        <td>
            &nbsp;</td>
    </tr>
    <tr>
        <td>
            &nbsp;</td>
        <td>
            &nbsp;</td>
    </tr>
</table>

</asp:Content>