如果觉得Alert窗的用户体验不佳可以试试这个小脚本，带有全屏淡化的效果(类似百度用户登陆框的效果)。包含警告、成功、错误、确认四个不同弹出框。-Alert window if they feel poor user experience can try this little scr ipt, with full-screen play down the effect (similar to Baidu User Login box effects). Contains a warning,