Jquery 类网页微信二维码图块滚动效果具体实现

                $(this).css(“top”,settings.top + “px”); 
            } else { 
                $(this).css(“bottom”,settings.bottom + “px”); 
            } 
            $(this).css(“opacity”,settings.opacity); 
            $(this).css(“filter”,”alpha(opacity=” + parseInt(settings.opacity * 100)  + “)”); 
            switch(settings.layout) { 
                case “left”: 
                    $(this).css(“left”,”-100px”); 
                    break; 
                case “right”: 
                    $(this).css(“right”,”-100px”); 
                    break; 
                case “center”: 
                    var left = (parseInt(window.screen.availWidth) – parseInt(settings.width))/2 + “px”; 
                    $(this).css(“left”,left); 
                    break; 
                default: 
                    $(this).css(“left”,”-100px”); 
                    break; 
            } 
        } else { 
            return;