jQuery遮罩层在线QQ客服代码基于jquery.1.7.1.js制作，点击网页右侧浮动在线客服图标，弹出遮罩层客服中心窗口，带关闭按钮。-jQuery mask layer QQ online customer service code is based jquery.1.7.1.js make right click on the page icon floating online customer service, call center window pops up the mask