jQuery - dynamically wrap words in specific tags

gistfile1.js

/*
	Wrap specified words in the specified tag with jQuery
	h1, h2, and h3 are preselected because of the project this was made for.
	Separate the words you wish to wrap by the "pipe" symbol.

	You should note that this cascades down through all child elements. So you can be as broad or narrow as you want with the selector.
*/
$(document).ready(function(){
	var pattern = /\b(of|the|in|and)/gi; // target whole words globally and case insensitive
	var replaceWith = '<span>$1</span>'; // wrap in the tag you want
	$('h1,h2,h3').each(function(){
		$(this).html($(this).html().replace(pattern,replaceWith));
	});
});