asp radiobuttonlist + Textbox

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jQuery

hi I have a mulitple radio button list in my webpage

my code is as follows

<asp:RadioButtonList ID="Q2_rb" runat="server" CssClass="idradio1" RepeatLayout="Flow" RepeatDirection="Horizontal">

                           <asp:ListItem Text="Yes" Value="0"></asp:ListItem>
                           <asp:ListItem Text="No" Value="1"></asp:ListItem>

                           <asp:ListItem Text="Recomended" Value="2"></asp:ListItem>
                           <asp:ListItem Text="Doesnotapply" Value="3"></asp:ListItem>

                       </asp:RadioButtonList>

<asp:TextBox ID="Q2_txt"  CssClass="idtxt1"  runat="server">

when user click on the Other than Yes from the asp radiobutton list it should be enbled .please tell me genric function for this