Abstract: A computer-implemented method for performing inter-domain communication in a web browser includes receiving first data from a first domain at a router associated with one or more domains other than the first domain, identifying at the router the one or more domains for receiving data associated with the received data, and transmitting second data associated with the received data to the one or more domains.

Abstract: A computer-implemented method includes displaying information from a mapping application on a first domain on a web page, displaying one or more portable program modules from a second domain on the web page, and generating a display on the mapping application based actions form the one or more portable program modules.

Abstract: One embodiment of the present invention provides a system that updates a document. During operation the system can receive a first document which was generated using a first set of data. The first document can include a first set of layout instructions which specify how to arrange the first set of data in the first document. The first document can also include a first set of template-processing instructions which specify how to update the first document. Next, the system can receive an update to the first set of data. The system can then apply the update to the first set of data to obtain a second set of data. Next, the system can generate a second document using the second set of data and the first set of template-processing instructions.