Difference between web controls rendering and html table properties using ASP.NET

I'm designing a website in ASP.NET and I want to build table with some text, textboxes and validators in it. The problem is that table looks different in Firefox and IE. Here is an example:

http://www.freeimagehosting.net/image.php?224860e266.png

Here is the table code in ASP.NET:

<table align="center" cellpadding="0" cellspacing="1" style="text-align: right; border-collapse: separate;">
    <tr>
        <td>
            Nadawca:
        </td>
        <td>
            <asp:TextBox ID="TextBoxNadawca" runat="server" Width="250px" BorderStyle="none"
                BackColor="#c1ae85"></asp:TextBox>
        </td>
        <td align="left">
            &nbsp;<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Nadawca jest wymagany."
                ControlToValidate="TextBoxNadawca" ForeColor="Red"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td>
            Adres e-mail:
        </td>
        <td>
            <asp:TextBox ID="TextBoxMail" runat="server" Width="250px" BorderStyle="none" BackColor="#c1ae85"></asp:TextBox>
        </td>
        <td align="left">
            &nbsp;<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="E-mail jest wymagany."
                ControlToValidate="TextBoxMail" ForeColor="Red"></asp:RequiredFieldValidator>
            <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBoxMail"
                ErrorMessage="Nieprawidłowy format." ForeColor="Red" Style="position: absolute;
                top: 589px; left: 632px; width: 160px;" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator>
        </td>
    </tr>
    <tr>
        <td>
            Temat:
        </td>
        <td>
            <asp:DropDownList ID="DropDownTemat" runat="server" Style="margin-left: 0px;" Width="250px"
                BorderStyle="none" BackColor="#c1ae85">
                <asp:ListItem>Reklama w serwisie</asp:ListItem>
                <asp:ListItem>Pomysł na rozwój serwisu</asp:ListItem>
                <asp:ListItem>Chcę zostać moderatorem</asp:ListItem>
                <asp:ListItem>Prawa autorskie</asp:ListItem>
                <asp:ListItem>Banicja</asp:ListItem>
                <asp:ListItem>Błąd na stronie</asp:ListItem>
                <asp:ListItem>Inne</asp:ListItem>
            </asp:DropDownList>
        </td>
    </tr>
    <tr>
        <td>
            Treść:
        </td>
        <td>
            <asp:TextBox ID="TextBoxTresc" runat="server" Height="150px" TextMode="MultiLine"
                Width="250px" BorderStyle="none" BackColor="#c1ae85"></asp:TextBox>
        </td>
        <td align="left">
            &nbsp;<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="Treść jest wymagana."
                ControlToValidate="TextBoxTresc" ForeColor="Red"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td>
            &nbsp;
        </td>
        <td style="text-align: center;">
            <asp:Button ID="Button1" runat="server" Text="Wyślij" OnClick="Button1_Click" Width="250px"
                BorderStyle="None" BackColor="#c1ae85" />
        </td>
    </tr>开发者_Go百科;
    <tr>
        <td>
        </td>
        <td style="text-align: justify">
            <br />
            <asp:Label ID="Label1" runat="server" Width="250px"></asp:Label>
        </td>
    </tr>
</table>

Thanks in advice,

Peter.

When i remove your styling code

<table align="center" cellpadding="0" cellspacing="1" style="text-align: right; border-collapse: separate;">

to

<table align="center">

It shows same for IE, Firefox and Chrome. So if you want to style your table ill suggest you to try CSS

Don't use tables for your layout, use CSS. The only time you should use tables is for tabular data. By using CSS here you can omit border-bottom where you are getting the double borders.