jQuery checkbox matching radiobuttonlist

On my pages I have a table with rows that typically look like this:

<tr class = "child">
       <td>
             <asp:CheckBox ID="CheckBoxEyeProblems" runat="server" />

       </td>
       <td align="center">
             <asp:RadioButtonList ID="RadioButtonListEyeProblems" 
                <asp:ListItem Value="Y">Yes</asp:ListItem>
                <asp:Lis开发者_如何学运维tItem Value="N">No</asp:ListItem>
             </asp:RadioButtonList>
       </td>
</tr>

What I am trying to do is to disable/enable radiobuttonlist in the same row as the checkbox when you check/uncheck it.

$('tr.child input:checkbox').click(function()
{
     //last part of this selector is incorrect, how to correct it here? 
     var rblist = $(this).closest('tr.child').find(':input:radio');

     if ($(this).is(':checked'))
     { 
        //aslo not sure how to clear selection if any from RadioButtonList here
        rblist.attr('disabled', 'disabled');             

     }
     else
     {

         rblist.removeAttr('disabled');

     }

});

So, those are the problems I have. I am using ASP.NET 3.5.

Try this

$("tr.child td input:checkbox").click(function(){
    var chk = $(this);
    //chk.closest("td").next().find("input:radio").attr("disabled",chk.attr("checked"));
    // to remove checked attribute you can use
    chk.closest("td").next().find("input:radio").attr("checked", false).attr("disabled",chk.attr("checked"));
});