飞入动画

    function SelectedAnimation(that) {
        var temp = $(that).clone();
        $(temp).insertAfter($(that));
        var w = $(that).width();
        /**
         * 加入试题飞入效果
         */
        var imgTop = that.offset().top - (document.documentElement.scrollTop + document.body.scrollTop)
        that.css({"position": "fixed", "z-index": "9999", "left": that.offset().left + "px", "top": imgTop + "px"})
            .css("border", "1px solid #333")
            .css("background", "#EAFDF5")
            .css("width", w);
        that.animate({
            "left": $("[hex-totalexscore]").offset().left + 20 + "px",
            "top": ($("[hex-totalexscore]").position().top + 20) + "px",
            "width": "60px",
            "height": "40px"
        }, 500, function () {
            that.remove();
        }).fadeTo(0, 0.1).hide(0);
    }