set html table column width

hi all i have a web control which ocntains a table. on each side of the table i have a column for a rounded image (to make it look nicer and so that ti can be resizable). i have set this as a background image to each top left and top right cell. and set the width="10px" however when i view the page these columns are appearing as narrow as they can an not the width i want.

heres the code

<%@ Control Language="VB" AutoEventWireup="true" CodeFile="large_product.ascx.vb" Inherits="large_product" %>

<Table class="largeProduct" width="100%">
    <tr>
        <td width="15px" background="images/rounded_left.gif"></td>
        <td class="largeProductTitle" colspan="4">
            <asp:label id="title" text="Featured Product" runat="server"/>
        </td>
        <td width="15px" background="images/rounded_right.gif"></td>
    </tr>
    <tr>
        <td />
        <td rowspan="3">
            <img alt="Product Image" width="158" height="214" />
        </td>
        <td colspan="3">
            <asp:label id="brief_des" runat="server"/>
        </td>
        <td />
    </tr>
    <tr>
      <td/>
        <td class="largeProductHeaderCell" height="15">
            <asp:label text="Size" RunAt="server"/>
          </td>
        <td class="largeProductHeaderCell" height="15">
            <asp:label text="Flavours" RunAt="server"/>
          </td>
        <td class="largeProductHeaderCell" height="15">
            <asp:label text="Price" RunAt="server"/>
      </td>
      <td/>
    </tr>
    <tr>
      <td/>
        <td>
            <asp:dropdownlist id="sizes" runat="server"/>
          </td>
        <td>
            <asp:dropdownlist id="flavours" runat="server"/>
          </td>
        <td>
            <asp:label id="price" runat="server"/>
      </td>
      </td>
    </tr>
    <tr>
      <td />
        <td>
            &nbsp;</td>
        <td>
            &nbsp;</td>
        <td>
            Additional info
        </td>
      </td>
    </tr>
</Table>

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