Filter only applied after page loaded

[GoogleCodeExporter]

Issue submitted by Martin on Chrome Extension Gallery page:
Hi Mark, the problem with this extension is that it loads the page and only 
then replaces the words. There is a "beforeload" event out now which you can 
use to prevent these bad words from loading at all. I STRONGLY suggest that you 
use it. AdBlock is using it too. It's much better if you don't even load the 
bad word rather than load it and then hide it...

Original issue reported on code.google.com by markyd13 on 2 Aug 2010 at 8:08

[richardfrost]

Not sure that this is the right way to go, but here is an example of the beforeload event.

https://stackoverflow.com/questions/11386246/addeventlistenerbeforeload-missing-events

document.addEventListener( 'beforeload', function( event ) {
    event.preventDefault();
}, true );

Occasionally I do get a page that loads slower and I can catch a glimpse of unfiltered words, but it seems to be quite brief to me. I will wait to hear more feedback on this.