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<style type='text/css'>
#Dnow-ScrolltoTop {-moz-border-radius: 5px;-webkit-border-radius: 5px;border-radius: 5px; width:100px;background-color: #EEEEEE;background-color: rgba(238, 238, 238, 0.6);filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#99EEEEEE',EndColorStr='#99EEEEEE');text-align:center;padding:5px;position:fixed;bottom:10px;right:10px;cursor:pointer;color:#444;text-decoration:none;border:1px solid #C9C9C9;}
</style>

<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js' type='text/javascript'></script>

<script type='text/javascript'>
$(function() {
    $.fn.scrollToTop = function() {
    $(this).hide().removeAttr("href");
    if ($(window).scrollTop() != "0") {
        $(this).fadeIn("slow")
    }
    var scrollDiv = $(this);
    $(window).scroll(function() {
        if ($(window).scrollTop() == "0") {
        $(scrollDiv).fadeOut("slow")
        } else {
        $(scrollDiv).fadeIn("slow")
        }
    });
    $(this).click(function() {
        $("html, body").animate({
        scrollTop: 0
        }, "slow")
    })
    }
});
$(function() {
    $("#Dnow-ScrolltoTop").scrollToTop();
});
</script>

<div style='font-size:10px'>
<a href='#' id='Dnow-ScrolltoTop' style='display:none;'>&#9650;回到上方&#9650;<br/>Scroll to Top </a>
</div>

GO TO TOP 回到上方 Scroll to Top