 * Stand-alone Python-to-Javascript Compiler
   ** pyjs.py - understands builtins, globals, functions, modules, classes.
   ** pyjslib.py - wraps builtins such as list, tuple, dict, string
 * DOM model module - DOM.py
   ** Javascript/Python hybrid (inline asm-like javascript snippets)
   ** Provides full access to browser DOM (getElementById etc.)
   ** Handles browser events (onmousedown, onkeyup etc.)
 * Browser Window.py module
   ** Provides window.alert, window.open, get window size etc.
   ** Handles window events (onresize, onclose); provides callback mechanism
 * Widget-set library - pyjamas.ui.*
   ** Standard PyQt4/PyGtk2-like widgets
   ** Label, HTML, Button, Radio, Image
   ** HorizontalPanel, VerticalPanel, Grid, HTMLTable, 2-way SplitPanels
