Method for processing data in a navigation module, the navigation module having a local database allowing recording and access to data recorded by one or more modules adapted to be loaded into the navigation module and belonging to one and the same domain name termed common navigation domain, characterized in that it comprises the following steps: - loading by the navigation module of a first Web page belonging to a navigation domain distinct from the common navigation domain, - loading into the navigation module of a first work module (151, 141) associated with the first Web page and belonging to the common navigation domain, - obtaining by the first work module of a group of instructions for processing data and of a group of data to be processed on the basis of a server belonging to the common navigation domain, - processing by the first work module, according to at least one instruction of the group of instructions of at least one datum of the group of data to be processed, - storage by the first work module, in the local database, of at least one remaining instruction to be executed and of at least one intermediate result datum obtained by the processing of the at least one datum to be processed, - subsequent to the loading by the navigation module of a new Web page belonging to a navigation domain distinct from the common navigation domain, and to the loading into the navigation module of a new work module (152, 142) associated with the new Web page and belonging to the common navigation domain, processing of the at least one intermediate result datum, according to at least the stored remaining instruction, - the steps of storage, of loading of a new Web page, of loading of a new work module and of processing being iterated until the obtaining of a final result obtained when all the instructions of the group of instructions have been executed and, - dispatching of the final result to the server belonging to the common navigation domain. - loading by the navigation module of a first Web page belonging to a navigation domain distinct from the common navigation domain, - loading into the navigation module of a first work module (151, 141) associated with the first Web page and belonging to the common navigation domain, - obtaining by the first work module of a group of instructions for processing data and of a group of data to be processed on the basis of a server belonging to the common navigation domain, - processing by the first work module, according to at least one instruction of the group of instructions of at least one datum of the group of data to be processed, - storage by the first work module, in the local database, of at least one remaining instruction to be executed and of at least one intermediate result datum obtained by the processing of the at least one datum to be processed, - subsequent to the loading by the navigation module of a new Web page belonging to a navigation domain distinct from the common navigation domain, and to the loading into the navigation module of a new work module (152, 142) associated with the new Web page and belonging to the common navigation domain, processing of the at least one intermediate result datum, according to at least the stored remaining instruction, - the steps of storage, of loading of a new Web page, of loading of a new work module and of processing being iterated until the obtaining of a final result obtained when all the instructions of the group of instructions have been executed and, - dispatching of the final result to the server belonging to the common navigation domain.