Javascript and Firebug based recording script development(repost)

The MT project is aimed to create 2 complementary applications: 1. An Editor ??" a Firefox addon that will allow selecting HTML elements inside a web page. The editor will save the selected HTML elements Xpath to a server DB in addition to other parameters. 1. A Player ??" a cross browser JS script that the webmaster will add to his site footer (similar to Google Analytics code). The JS will use the Editor's saved Xpath data and will highlight the HTML elements (that were recorded in the editor) The application should work on Windows OS (xp and up).