Passing byte[] as a input parameter to a WebService

HI, I am trying to send byte[] as a input parameter to a Webmethod in a webservice through javascript. But,its not allowing me to pass the byte. I tried using JSON but it doesnt support byte object. Same is the case with javascriptSerialize class.

Can any one suggest on this. My requirement is. Passing Array of byte as a input to a Webservice through javascript. I m using Ajax extension in my application.

Thanx.
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