submit_button.txt

                $(".submit_button").click(function(){
                    var type_question = $(this).attr('data-type');
                    if(type_question=='t')
                    {
                        submit_marks('t1');
                        submit_marks('t2');
                        submit_marks('t3');
                    }
                    else if(type_question=='e')
                    {
                        submit_marks('e');
                    }
                });
                
                function submit_marks(type_question)
                {
                    if(type_question=='t1')
                        var data = $("#form_marks_T1").serializeArray();
                    else if(type_question=='t2')
                        var data = $("#form_marks_T2").serializeArray();
                    else if(type_question=='t3')
                        var data = $("#form_marks_T3").serializeArray();
                    else if(type_question=='e')
                        var data = $("#form_marks_E").serializeArray();
                    var ajaxData = {};
                    var maxMarks = []
                    //CAREFUL, hard coded line below
                    if(type_question=='t1')
                        var num_subparts = $("#mark_table_body_T1").find("tr:first td").length-2;
                    else if(type_question=='t2')
                        var num_subparts = $("#mark_table_body_T2").find("tr:first td").length-2;
                    else if(type_question=='t3')
                        var num_subparts = $("#mark_table_body_T3").find("tr:first td").length-2;
                    else if(type_question=='e')
                        var num_subparts = $("#mark_table_body_E").find("tr:first td").length-2;
                    for(var j = 0;j<num_subparts;j++)
                    {
                        maxMarks.push(parseFloat(data[j].value));
                    }
                    for(var i = 1;i<data.length/num_subparts;i++)
                    {
                        for(var j = 0;j<num_subparts;j++)
                        {
                            var tmp_mark = data[i*num_subparts+j].value;
                            if(tmp_mark=='')
                            {
                                alert("No field can be empty!");
                                return;
                            }
                            if((tmp_mark.split('.')[1] || []).length > 1)
                            {
                                alert("Least count is 0.1");
                                return;
                            }
                            if(parseFloat(tmp_mark)>maxMarks[j])
                            {
                                alert("Marks should be less than max marks");
                                return;
                            }
                            ajaxData[(i-1)*num_subparts+j] = parseFloat(tmp_mark);
                        }
                    }
                    if(type_question=='t1')
                        var destination_url = 'submit_mark_T1';
                    else if(type_question=='t2')
                        var destination_url = 'submit_mark_T2';
                    else if(type_question=='t3')
                        var destination_url = 'submit_mark_T3';
                    else if(type_question=='e')
                        var destination_url = 'submit_mark_E';
                    $.ajax({
                            method:"POST",
                            timeout:4000,
                            url:destination_url,
                            data:ajaxData
                            }).
                    done(function(data)
                    {
                            window.open(data.filename,"_blank");
                    });
                }