Custom validator for asp.net checkbox list

I am using a custom validator for my radiobuttonlist, with a code simmilar to the one below, but I switched the radiobuttonlist to a checkboxlist, and seems to not work, the purpose is to check if the user selected one option that says ' other' have him enter data in the other textbox, can you please suggest how to make it work?

                 <asp:TextBox ID="txt2other" runat="server" CssClass="txtOther"></asp:TextBox>
                       &nbsp;<asp:CustomValidator ID="CustomValidator3" runat="server"
                           ClientValidationFunction="checkOther2" ControlToValidate="txt2other"
                           ErrorMessage="Please enter a comment in question #2." style="font-weight: 700"
                           ValidateEmptyText="True"></asp:CustomValidator>


        function checkOther2(oSrc, args) {
            var rbtnValue = null;
            var rbtnList = document.getElementsByName('<%= CheckBoxList1.ClientID %>');
            var radio = rbtnList[0].getElementsByTagName("input");
            for (var j = 0; j < radio.length; j++) {
                if (radio[j].checked)
                    rbtnValue = radio[j].value;
            }
            if (rbtnValue == 'Other') {
                args.IsValid = !(args.Value == "")
            }
            else {
                args.IsValid = true;
            }
        }
LVL 9
TonyRebaAsked:
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TonyRebaAuthor Commented:
Can you check the code above and see if any error??
0
BuggyCoderCommented:
controltovalidate should point to the checkboxlist rather than text box
0
TonyRebaAuthor Commented:
Sorry , what I need is to validate the textbox, but is required only if

 if (rbtnValue == 'Other')  



Is selectected.....
0
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