Keypress and Keyup in Jquery

HTML

asp:GridView ID="grdquestions" runat="server" AutoGenerateColumns="false" OnRowDataBound="grdquestions_RowDataBound" DataKeyNames="QuestionId" Width="100%">  
<Columns>  
    <asp:TemplateField HeaderText="Asp .Net Online Test">  
        <ItemTemplate>  
            <table class="tableclass" id='<%#Eval("QuestionId") %>'>  
                <tr>  
                    <td>  
                        <b>Question <%#Eval("QuestionId") %> -: <%#Eval("Question") %>  
                        </b>  
                        <asp:HiddenField ID="hdnquestionId" runat="server"/>  
                    </td>  
                </tr>  
                <tr>  
                    <td>  
                        <table>  
                            <tr>  
                                <td>  
                                    <table class="tblOptions">  
                                        <tr>  
                                            <td>  
                                                <asp:RadioButton ID="rdOption1" runat="server" Text='<%#Eval("Option1") %>' GroupName='  
                                                    <%#Eval("QuestionId") %>' />  
                                                </td>  
                                            </tr>  
                                            <tr>  
                                                <td>  
                                                    <asp:RadioButton ID="rdOption2" runat="server" Text='<%#Eval("Option2") %>' GroupName='  
                                                        <%#Eval("QuestionId") %>' />  
                                                    </td>  
                                                </tr>  
                                                <tr>  
                                                    <td>  
                                                        <asp:RadioButton ID="rdOption3" runat="server" Text='<%#Eval("Option3") %>' GroupName='  
        ...