function tickettype(num){
    if(num==1){
        $('#Order_details').html('<table id="tab_1" width="100%" border="0" cellspacing="0" cellpadding="0" class="order-table"><tr><td>登机者姓名：</td><td>出发日期：</td></tr><tr><td><input type="text" name="" id=""/></td><td><input type="text" name="DepartureDate" id="DepartureDate"/></td></tr><tr><td>起始地：</td><td>目的地：</td></tr><tr><td><input type="text" name="from" id="from"/></td><td><input type="text" name="to" id="to"/></td></tr><tr><td>机票类型：</td><td>舱位类型：</td></tr><tr><td><select id=""><option value="Adults">Adults</option><option value="Children">Children</option></select></td><td><select id=""><option value="economy">economy</option><option value="business">business</option><option value="allCabins">allCabins</option></select></td></tr><tr><td><input type="button" id="return" value="返程" /></td><td><input type="button" id="nexts" value="下一张" /></td><td><input type="button" id="cancel" value="取消" /></td></tr></table>');
    }
    num++;
    
    $('#cancel').unbind();
    $('#cancel').click(function(){
        alert(111);
        tickettype(num);
    });
    
    $('#return').unbind();
    $('#return').click(function(){
        $('table:last tr:eq(6) td:lt(2)').remove();
        $('#Order_details').append('<table id="tab_'+num+'" width="100%" border="0" cellspacing="0" cellpadding="0" class="order-table"><tr><td>登机者姓名：</td><td>出发日期：</td></tr><tr><td><input type="text" name="" id=""/></td><td><input type="text" name="DepartureDate" id="DepartureDate"/></td></tr><tr><td>起始地：</td><td>目的地：</td></tr><tr><td><input type="text" name="from" id="from"/></td><td><input type="text" name="to" id="to"/></td></tr><tr><td>机票类型：</td><td>舱位类型：</td></tr><tr><td><select id=""><option value="Adults">Adults</option><option value="Children">Children</option></select></td><td><select id=""><option value="economy">economy</option><option value="business">business</option><option value="allCabins">allCabins</option></select></td></tr><tr><td></td><td><input type="button" id="nexts" value="下一张" /></td><td><input type="button" id="cancel" value="取消" /></td></tr></table>');
        tickettype(num);
    });
    
    $('#nexts').unbind();
    $('#nexts').click(function(){
        $('table:last tr:eq(6) td:lt(2)').remove();
        $('#Order_details').append('<table id="tab_'+num+'" width="100%" border="0" cell