//禁止滚动条滚动

function unScroll() {

    var top = $(document).scrollTop();

    $(document).on('scroll.unable',function (e) {

        $(document).scrollTop(top);

    })

}

//移除禁止滚动条滚动

function removeUnScroll() {

    $(document).unbind("scroll.unable");

}

//滚动条消失

$('html,body').css({'overflow': 'hidden'});

//滚动条出现

$('html,body').css({'overflow': 'auto'});