4chan script thing

// ==UserScript==
// @name           4chan Shift_JIS + ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
// @description    Handles Shift_JIS art and also changes blank posts to ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
// @include        http://boards.4chan.org/*
// ==/UserScript==

// Edited version of http://userscripts.org/scripts/show/107059

var show_kitaa = true;
var show_sjis = true;

var detector=/[　、。，．・：；？！゛゜｀¨＾￣＿ヽヾゝゞ〃〆〇ー―‐／\～｜‘’“”（）〔〕［］｛｝〈〉《》「」『』【】＋−±×÷＝≠＜＞≦≧∞∴′″]/

function get(s){
	var res=[];

	var list=document.evaluate(s,document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null);

	for(var i=0;i<list.snapshotLength;i++){
		res.push(list.snapshotItem(i));
	}

	return res;
}

var elems=get("//blockquote");
for(var i in elems){
	var elem=elems[i];

	if((elem.textContent == "") && (show_kitaa)) {
		elem.textContent = "ｷﾀ━━━(ﾟ∀ﾟ)━━━!!";
		//elem.style.fontFamily="Mona,'MS PGothic'";
	}
	else if((elem.textContent.match(detector)) && (show_sjis)){
		elem.style.fontFamily="Mona,'MS PGothic'";
	}
}