function scroll(hObject,eventdata,handles)
%function scroll(hObject,eventdata,handles)
%滾輪響應
    s=hObject;
    data=get(s,'MouseWheelMovedCallbackData');
    switch data.wheelRotation
    case 1
    set(s,'value',min(get(s,'value')+5,get(s,'Maximum')));
    case -1
    set(s,'value',max(get(s,'value')-5,get(s,'Minimum')));
    otherwise
    end