實現“返回頂部”功能的jQuery插件：ScrollUp

ScrollUp 是一個輕量級的 jQuery 插件，輕松實現了滾動頁面的 “返回頂部” 的功能。

在線演示：http://markgoodyear.com/labs/scrollup/

示例代碼：

$(function () {
    $.scrollUp({
        scrollName: 'scrollUp', // Element ID
        topDistance: '300', // Distance from top before showing element (px)
        topSpeed: 300, // Speed back to top (ms)
        animation: 'fade', // Fade, slide, none
        animationInSpeed: 200, // Animation in speed (ms)
        animationOutSpeed: 200, // Animation out speed (ms)
        scrollText: 'Scroll to top', // Text for element
        activeOverlay: false, // Set CSS color to display scrollUp active point, e.g '#00FFFF'
    });

});

項目主頁：http://www.baiduhome.net/lib/view/home/1361147514744