文字化け

mozibake.js

var $ = function ( selector, context ) {
	context = context || document;
	return context.querySelector(selector);
};
var enc = {
	s : "Shift_JIS",
	e : "EUC-JP",
	u : "UTF-8",
	i : "ISO-2022-JP"
}[location.hash.substr(1)];

var request = new XMLHttpRequest();
request.open("GET", location.href);
request.setRequestHeader("content-type", "text/html; charset=" + enc);
request.onreadystatechange = function () {
	if (request.readyState === 4 && request.status === 200) {
		var newSite = document.createElement("html");
		newSite.innerHTML = request.response;
		
		var meta = document.createElement("meta");
		meta.setAttribute("http-equiv", "Content-Type");
		meta.setAttribute("content", "text/html; charset=" + enc);

		$("html head", newSite).appendChild(meta);
		
		$("html").removeChild( $("html head"));
		$("html").insertBefore($("html head", newSite), document.body);

		$("html").removeChild( $("html body"));		
		$("html").appendChild( $("html body", newSite) );		
	}
};
request.send();