Decensor is a plugin for jQuery for decensoring text. It uses Ben Alman's replaceText plugin for the text replacement.
This will apply decensor to the whole body, with the default mapping (which covers "sh!t", "f*ck" and "b*llocks"):
$('body').decensor();
This uses the default mapping, and additionally replaces instances of "twerp" with "twat":
$('body').decensor(['twerp', 'twat']);
Use nested arrays for multiple mappings:
$('body').decensor([['dingle', 'dongle'], ['blooming', 'bloody']]);
Pass true as a second argument (or as the only argument) to apply the
opposite transformation. This will effectively censor swear words:
$('body').decensor(true);