Cross-browser upload big files over HTTP (partly)?

I need to upload big files over http without affecting IIS timeout (using multiple independent requests). Should I use any plug-i开发者_JAVA技巧ns or it is possible with javascript?

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You will need a server side language to process the request, since you mentioned you are using IIS I will assume .Net

What you need is Asynchronous File Upload - somthing like this http://swfupload.org/node/47