JSON serialization filter to remove the .d from ASP.NET JSON web services

gistfile1.as

package
{
	import com.adobe.serialization.json.JSON;
	
	import mx.rpc.http.AbstractOperation;
	import mx.rpc.http.SerializationFilter;
	
		
	public class JSONSerializationFilter extends SerializationFilter
	{
		public static const RESULT_FORMAT_JSON:String = "json";  
		
		public function JSONSerializationFilter()
		{
			super();
		}
		
		override public function deserializeResult(operation:AbstractOperation, result:Object):Object
		{
			var o:Object = JSON.decode(String(result));
			
			if (o.hasOwnProperty("d"))
			{
				return o.d;
			}

			return o.d;
		}
	}
}

Why? (i.e. no harm to explain reason given http://stackoverflow.com/questions/2811525/removing-the-d-object-from-asp-net-web-service-json-output)

@bartelink He's doing it client side in a language where JS inst in play - spend a few more seconds scanning will ya!

Where I have to put it?