1. A method for dynamically constructing a web page, comprising: receiving a request for a webpage identified by a URL and defined by a plurality of GUI nodes stored in a page registry, wherein at least two of the plurality of GUI nodes each comprise an access right property defining a group of users who have access to the GUI node; determining a security credential of a user associated with the request; comparing, for each of the at least two of the plurality of GUI nodes, the access right property representing the group of users who have access to the GUI node to the determined security credential of the user associated with the request; identifying, based at least in part on the comparing, a subset of the plurality of GUI nodes that the user is authorized to access; retrieving the subset of the plurality of GUI nodes the user is authorized to access; determining a data representation specification associated with the user, the data representation specification specifying one or more data formats appropriate for the user; converting the subset of the plurality of GUI nodes the user is authorized to access into a script conforming to the data representation specification associated with the user; transmitting the script to the user; and further comprising identifying, based on the comparing, a second subset of the plurality of GUI nodes that the user is not authorized to access, wherein each GUI node of the second subset of the plurality of GUI nodes is capable of being converted into a second script conforming to the data representation specification associated with the user.