Some basic functions from mootools implemented in util.js.
Also, some more DOM separation. Move clipboard focus logic into
default_controls and canvas and out of vnc.js.
JSLint cleanup.
- All state/status updates go through updateState routine which
updates the status line also.
- Old firefox (and opera) don't support canvas createImageData, so use
getImageData as replacement.
- Add console.warn and console.error stubs so that firefox without
firebug doesn't crap out.
- If no WebSockets then error if no flash or if URL is location (flash
will refuse to load the object for security reasons).
Joel Martin