Patent ID: 6976211

Claim:
A computer-implemented method of controlling access by a parent node to child nodes in a DOM tree corresponding to a data file, comprising the steps of: assigning a parent-node context-value to said parent node, said parent-node context-value being stored as character information in the data file; assigning a child-node context-value to each of said child nodes, said parent-node context-value being stored as character information in the data file; correlating one or more of said child nodes to said parent node, said correlating step comprising at least assigning the child-node context-value of said correlated child nodes to be the same as the parent-node context value; and permitting access by said parent node only to said correlated child nodes; wherein each of said parent node and said child nodes is assigned a name, said name being stored as character information in the data file, and wherein each of the names assigned to said child nodes is encrypted at the time it is assigned, and wherein said step of permitting access comprises at least the step of: decrypting the names of each correlated child node.