SWFUploader,ajax上传组件，结合cos上传组件一起使用，可以上传1G大小的附件。并且该组件提供js，方面开发者使用。-SWFUploader, ajax upload component, combined with the use of cos upload component, the size of attachments you can upload 1G. And that the component provides js, area developers.

SWFUploader,ajax上传组件，结合cos上传组件一起使用，可以上传1G大小的附件-SWFUploader, ajax upload component, combined with the use of cos upload component, the size of attachments you can upload 1G

points are calculated by sin/cos and drawn by line function