jQuery(document).ready(function () {
    jQuery('body').prepend('<span id="bm-top" />');
    jQuery('body').append('<a href="#bm-top" id="bm-arrow-top">Back To Top</a>');
    jQuery('#bm-arrow-top').bm_topLink({
        min: 200,
        fadeSpeed: 500
    });
    jQuery('#bm-arrow-top').click(function (e) {
        e.preventDefault();
    });
    jQuery('a[href*=#]').click(function () {
        if (location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') && location.hostname == this.hostname) {

            var $target = jQuery(this.hash);
            $target = $target.length && $target || jQuery('[name=' + this.hash.slice(1) + ']');

            if ($target.length) {
                var targetOffset = $target.offset().top;
                jQuery('html,body').animate({ scrollTop: targetOffset }, 1000);
                return false;
            }
        }
    });
});
jQuery.fn.bm_topLink = function (settings) {
    settings = jQuery.extend({
        min: 1,
        fadeSpeed: 200
    }, settings);
    return this.each(function () {
        var el = jQuery(this);
        el.hide();
        jQuery(window).scroll(function () {
            if (jQuery(window).scrollTop() >= settings.min) {
                el.fadeIn(settings.fadeSpeed);
            } else {
                el.fadeOut(settings.fadeSpeed);
            }
        });
    });
};