(function () {
	"use strict";
	version.extensions.hoverreplaceMacro = {
		major: 1,
		minor: 0,
		revision: 1
	};
	var mnames = ["mouseremove", "mousereplace", "mousecontinue", "hoverremove", "hoverreplace"];
	var mobj = {
		handler: function (g, e, f, b) {
			var rpm = "replacement",
				hv = (e.indexOf("hover") > -1 ? "hover" : "mouse"),
				de = "data-enabled",
				I, II, c, d, k, elem;

			function showVer(n) {
				if(!n.innerHTML) {
					new Wikifier(n, n.tweecode);
				}
				n.style.display = "inline";
				n.classList.remove(rpm + "-out");
				n.classList.add(rpm + "-in");
				if(n.timeout) clearTimeout(n.timeout);
				n.timeout = setTimeout(function () {
					n.classList.remove(rpm + "-in");
				}, 1);
			}

			function hideVer(n) {
				n.classList.remove(rpm + "-in");
				n.classList.add(rpm + "-out");
				if(n.timeout) clearTimeout(n.timeout);
				n.timeout = setTimeout(function () {
					n.classList.remove(rpm + "-out");
					n.style.display = "none";
					n.innerHTML = "";
				}, 1000);
			}

			function tagcontents(b, starttags, desttags, endtags, k) {
				function tagfound(i, e) {
					for(var j = 0; j < e.length; j++) {
						if(a.indexOf(e[j], i) == i) {
							return e[j];
						}
					}
				}
				var a = b.source.slice(k);
				var l = 0;
				var c = "";
				var tg;
				for(var i = 0; i < a.length; i++) {
					if(tg = tagfound(i, starttags)) {
						l++;
					}
					else if((tg = tagfound(i, desttags)) && l == 0) {
						b.nextMatch = k + i + tg.length;
						return [c, tg];
					}
					else if(tg = tagfound(i, endtags)) {
						l--;
						if(l < 0) {
							return null;
						}
					}
					c += a.charAt(i);
				}
				return null;
			}
			var begintags = [],
				endtags = [],
				rw = ["<<gains>>", "<<becomes>>"],
				etr = ["<<end" + e + ">>"];
			mnames.forEach(function (i) {
				begintags.push("<<" + i);
				endtags.push("<<end" + i);
			});
			k = b.source.indexOf('>>', b.matchStart) + 2;
			if(e.indexOf("replace") == -1) {
				c = tagcontents(b, begintags, etr, endtags, k);
				if(c) {
					if(e.indexOf("continue") > -1) {
						d = [b.source.slice(b.nextMatch), ""];
						b.nextMatch += d[0].length;
					}
					else {
						d = ["", ""];
					}
				}
			}
			else {
				c = tagcontents(b, begintags, rw, endtags, k);
				d = tagcontents(b, begintags, etr, endtags, c ? b.nextMatch : k);
			}
			if(c && d) {
				c[1] = c[1].replace("<<", "").replace(">>", "");
				if(d[0]) {
					g = insertElement(g, "span", null, hv + rpm + "s");
					elem = g;
				}
				I = insertElement(g, "span", null, hv + rpm + " " + (d[0] ? "initial" : e));
				I.tweecode = c[0];
				showVer(I);
				if(d[0]) {
					II = insertElement(g, "span", null, hv + rpm + " " + c[1]);
					II.tweecode = d[0];
					hideVer(II);
				}
				else {
					elem = I;
				}
				elem.onmouseover = function () {
					if(II) {
						showVer(II);
					}
					if(hv == "mouse") {
						elem.onmouseover = null;
					}
					if(c[1].indexOf("gains") == -1) {
						hideVer(I);
					}
				};
				if(hv == "hover") {
					elem.onmouseout = function () {
						if(II) {
							hideVer(II);
						}
						if(c[1].indexOf("gains") == -1) {
							showVer(I);
						}
					}
				}
			}
			else {
				throwError(g, "can't find matching " + (!c ? rw : "end" + e));
				return;
			}
		}
	}
	var nullobj = {
		handler: function () {}
	};
	mnames.forEach(function (e) {
		macros[e] = mobj;
		macros['end' + e] = nullobj;
	});
	macros.gains = macros.becomes = nullobj;
}());