Sindbad~EG File Manager

/*
 * Dynamic To Top Plugin
 * http://www.mattvarone.com
 *
 * By Matt Varone
 * @sksmatt
 *
 */
var mv_dynamic_to_top;
(function ($, mv_dynamic_to_top) {
    jQuery.fn.DynamicToTop = function (options) {
        var defaults = {
            text: mv_dynamic_to_top.text,
            min: parseInt(mv_dynamic_to_top.min, 10),
            fade_in: 600,
            fade_out: 400,
            speed: parseInt(mv_dynamic_to_top.speed, 10),
            easing: mv_dynamic_to_top.easing,
            version: mv_dynamic_to_top.version,
            id: 'dynamic-to-top'
        },
		settings = $.extend(defaults, options);
		if (settings.version === "" || settings.version === '0') {
            settings.text = '<span>&nbsp;</span>';
        }
        if ( ! $.isFunction(settings.easing) ) {
            settings.easing = 'linear';
        }
        var $toTop = $('<a href=\"#\" id=\"' + settings.id + '\"></a>').html(settings.text);
        $toTop.hide().appendTo('body').click(function () {
            $('html, body').stop().animate({
                scrollTop: 0
            }, settings.speed, settings.easing);
            return false;
        });
        $(window).scroll(function () {
            var sd = jQuery(window).scrollTop();
            if (typeof document.body.style.maxHeight === "undefined") {
                $toTop.css({
                    'position': 'absolute',
                    'top': sd + $(window).height() - mv_dynamic_to_top.margin
                });
            }
            if (sd > settings.min) {
                $toTop.fadeIn(settings.fade_in);
            } else {
                $toTop.fadeOut(settings.fade_out);
            }
        });
    };
    $('body').DynamicToTop();
})(jQuery, mv_dynamic_to_top);