Autoidetectar el campo elegido por el usuario

[pablinweb]

Prueba con esto:

Código:

<table border="0" width="100%">
  <tr>
    <td width="25%" class="text">Número de imágenes</td>
    <td width="12%" class="text"><input type="radio" name="tamanopagina" value="18" <% if tamanopagina = "18" then response.Write("checked")%>>&nbsp;18</td>
    <td width="12%" class="text"><input type="radio" name="tamanopagina" value="24" <% if tamanopagina = "24" then response.Write("checked")%><% if tamanopagina = "" then response.Write("checked")%>>&nbsp;24</td>
    <td width="12%" class="text"><input type="radio" name="tamanopagina" value="30" <% if tamanopagina = "30" then response.Write("checked")%>>&nbsp;30</td>
    <td width="13%" class="text"><input type="radio" name="tamanopagina" value="36" <% if tamanopagina = "36" then response.Write("checked")%>>&nbsp;36</td>
    <td width="13%" class="text"><input type="radio" name="tamanopagina" value="42" <% if tamanopagina = "42" then response.Write("checked")%>>&nbsp;42</td>
    <td width="13%" class="text"><input type="radio" name="tamanopagina" value="48" <% if tamanopagina = "48" then response.Write("checked")%>>&nbsp;48</td>
  </tr>
  <tr>
    <td width="25%" class="text">Tamaño de la imagen</td>
    <td width="12%" class="text"><input type="radio" name="tamanoimg" value="100" <% if tamanoimg = "100" then response.Write("checked")%>>&nbsp;100x70</td>
    <td width="12%" class="text"><input type="radio" name="tamanoimg" value="125" <% if tamanoimg = "125" then response.Write("checked")%>>&nbsp;125x87</td>
    <td width="12%" class="text"><input type="radio" name="tamanoimg" value="150" <% if tamanoimg = "150" then response.Write("checked")%><% if tamanoimg = "" then response.Write("checked")%>>&nbsp;150x105</td>
    <td width="13%" class="text"><input type="radio" name="tamanoimg" value="175" <% if tamanoimg = "175" then response.Write("checked")%>>&nbsp;175x122</td>
    <td width="13%" class="text"><input type="radio" name="tamanoimg" value="200" <% if tamanoimg = "200" then response.Write("checked")%>>&nbsp;200x140</td>
    <td width="13%" class="text" align="center"><input type="submit" value="Ver" name="B1" style="background-color: #333333; color: #CCCCCC; font-weight: bold; font-size: 10 px; border-style: solid; border-color: #CCCCCC"></td>
  </tr>
</table>