Fire pixel clustering javascript code from http://www.unorthodox.com.au/fire/js/cluster.bin.js unobfuscated using method described in http://www.mikepostma.com/blog/unobfuscate-javascript

gistfile1.js

(function () {
    var d = null;

    function e(a) {
        return function (b) {
            this[a] = b
        }
    }
    function h(a) {
        return function () {
            return this[a]
        }
    }
    var j;

    function k(a, b, c) {
        this.extend(k, google.maps.OverlayView);
        this.c = a;
        this.a = [];
        this.f = [];
        this.ca = [53, 56, 66, 78, 90];
        this.j = [];
        this.A = !1;
        c = c || {};
        this.g = c.gridSize || 60;
        this.l = c.minimumClusterSize || 2;
        this.J = c.maxZoom || d;
        this.j = c.styles || [];
        this.X = c.imagePath || this.Q;
        this.W = c.imageExtension || this.P;
        this.O = !0;
        if (c.zoomOnClick != void 0) this.O = c.zoomOnClick;
        this.r = !1;
        if (c.averageCenter != void 0) this.r = c.averageCenter;
        l(this);
        this.setMap(a);
        this.K = this.c.getZoom();
        var f = this;
        google.maps.event.addListener(this.c, "zoom_changed", function () {
            var a = f.c.getZoom();
            if (f.K != a) f.K = a, f.m()
        });
        google.maps.event.addListener(this.c, "idle", function () {
            f.i()
        });
        b && b.length && this.C(b, !1)
    }
    j = k.prototype;
    j.Q = "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m";
    j.P = "png";
    j.extend = function (a, b) {
        return function (a) {
            for (var b in a.prototype) this.prototype[b] = a.prototype[b];
            return this
        }.apply(a, [b])
    };
    j.onAdd = function () {
        if (!this.A) this.A = !0, n(this)
    };
    j.draw = function () {};

    function l(a) {
        if (!a.j.length) for (var b = 0, c; c = a.ca[b]; b++) a.j.push({
            url: a.X + (b + 1) + "." + a.W,
            height: c,
            width: c
        })
    }
    j.S = function () {
        for (var a = this.o(), b = new google.maps.LatLngBounds, c = 0, f; f = a[c]; c++) b.extend(f.getPosition());
        this.c.fitBounds(b)
    };
    j.z = h("j");
    j.o = h("a");
    j.V = function () {
        return this.a.length
    };
    j.ba = e("J");
    j.I = h("J");
    j.G = function (a, b) {
        for (var c = 0, f = a.length, g = f; g !== 0;) g = parseInt(g / 10, 10), c++;
        c = Math.min(c, b);
        return {
            text: f,
            index: c
        }
    };
    j.$ = e("G");
    j.H = h("G");
    j.C = function (a, b) {
        for (var c = 0, f; f = a[c]; c++) q(this, f);
        b || this.i()
    };

    function q(a, b) {
        b.s = !1;
        b.draggable && google.maps.event.addListener(b, "dragend", function () {
            b.s = !1;
            a.L()
        });
        a.a.push(b)
    }
    j.q = function (a, b) {
        q(this, a);
        b || this.i()
    };

    function r(a, b) {
        var c = -1;
        if (a.a.indexOf) c = a.a.indexOf(b);
        else for (var f = 0, g; g = a.a[f]; f++) if (g == b) {
            c = f;
            break
        }
        if (c == -1) return !1;
        b.setMap(d);
        a.a.splice(c, 1);
        return !0
    }
    j.Y = function (a, b) {
        var c = r(this, a);
        return !b && c ? (this.m(), this.i(), !0) : !1
    };
    j.Z = function (a, b) {
        for (var c = !1, f = 0, g; g = a[f]; f++) g = r(this, g), c = c || g;
        if (!b && c) return this.m(), this.i(), !0
    };
    j.U = function () {
        return this.f.length
    };
    j.getMap = h("c");
    j.setMap = e("c");
    j.w = h("g");
    j.aa = e("g");
    j.v = function (a) {
        var b = this.getProjection(),
            c = new google.maps.LatLng(a.getNorthEast().lat(), a.getNorthEast().lng()),
            f = new google.maps.LatLng(a.getSouthWest().lat(), a.getSouthWest().lng()),
            c = b.fromLatLngToDivPixel(c);
        c.x += this.g;
        c.y -= this.g;
        f = b.fromLatLngToDivPixel(f);
        f.x -= this.g;
        f.y += this.g;
        c = b.fromDivPixelToLatLng(c);
        b = b.fromDivPixelToLatLng(f);
        a.extend(c);
        a.extend(b);
        return a
    };
    j.R = function () {
        this.m(!0);
        this.a = []
    };
    j.m = function (a) {
        for (var b = 0, c; c = this.f[b]; b++) c.remove();
        for (b = 0; c = this.a[b]; b++) c.s = !1, a && c.setMap(d);
        this.f = []
    };
    j.L = function () {
        var a = this.f.slice();
        this.f.length = 0;
        this.m();
        this.i();
        window.setTimeout(function () {
            for (var b = 0, c; c = a[b]; b++) c.remove()
        }, 0)
    };
    j.i = function () {
        n(this)
    };

    function n(a) {
        if (a.A) for (var b = a.v(new google.maps.LatLngBounds(a.c.getBounds().getSouthWest(), a.c.getBounds().getNorthEast())), c = 0, f; f = a.a[c]; c++) if (!f.s && b.contains(f.getPosition())) {
            for (var g = a, u = 4E4, o = d, v = 0, m = void 0; m = g.f[v]; v++) {
                var i = m.getCenter();
                if (i) {
                    var p = f.getPosition();
                    if (!i || !p) i = 0;
                    else var w = (p.lat() - i.lat()) * Math.PI / 180,
                        x = (p.lng() - i.lng()) * Math.PI / 180,
                        i = Math.sin(w / 2) * Math.sin(w / 2) + Math.cos(i.lat() * Math.PI / 180) * Math.cos(p.lat() * Math.PI / 180) * Math.sin(x / 2) * Math.sin(x / 2),
                        i = 6371 * 2 * Math.atan2(Math.sqrt(i), Math.sqrt(1 - i));
                    i < u && (u = i, o = m)
                }
            }
            o && o.F.contains(f.getPosition()) ? o.q(f) : (m = new s(g), m.q(f), g.f.push(m))
        }
    }
    function s(a) {
        this.k = a;
        this.c = a.getMap();
        this.g = a.w();
        this.l = a.l;
        this.r = a.r;
        this.d = d;
        this.a = [];
        this.F = d;
        this.n = new t(this, a.z(), a.w())
    }
    j = s.prototype;
    j.q = function (a) {
        var b;
        a: if (this.a.indexOf) b = this.a.indexOf(a) != -1;
        else {
            b = 0;
            for (var c; c = this.a[b]; b++) if (c == a) {
                b = !0;
                break a
            }
            b = !1
        }
        if (b) return !1;
        if (this.d) {
            if (this.r) c = this.a.length + 1, b = (this.d.lat() * (c - 1) + a.getPosition().lat()) / c, c = (this.d.lng() * (c - 1) + a.getPosition().lng()) / c, this.d = new google.maps.LatLng(b, c), y(this)
        } else this.d = a.getPosition(), y(this);
        a.s = !0;
        this.a.push(a);
        b = this.a.length;
        b < this.l && a.getMap() != this.c && a.setMap(this.c);
        if (b == this.l) for (c = 0; c < b; c++) this.a[c].setMap(d);
        b >= this.l && a.setMap(d);
        a = this.c.getZoom();
        if ((b = this.k.I()) && a > b) for (a = 0; b = this.a[a]; a++) b.setMap(this.c);
        else if (this.a.length < this.l) z(this.n);
        else {
            b = this.k.H()(this.a, this.k.z().length);
            this.n.setCenter(this.d);
            a = this.n;
            a.B = b;
            a.ga = b.text;
            a.ea = b.index;
            if (a.b) a.b.innerHTML = b.text;
            b = Math.max(0, a.B.index - 1);
            b = Math.min(a.j.length - 1, b);
            b = a.j[b];
            a.da = b.url;
            a.h = b.height;
            a.p = b.width;
            a.M = b.textColor;
            a.e = b.anchor;
            a.N = b.textSize;
            a.D = b.backgroundPosition;
            this.n.show()
        }
        return !0
    };
    j.getBounds = function () {
        for (var a = new google.maps.LatLngBounds(this.d, this.d), b = this.o(), c = 0, f; f = b[c]; c++) a.extend(f.getPosition());
        return a
    };
    j.remove = function () {
        this.n.remove();
        this.a.length = 0;
        delete this.a
    };
    j.T = function () {
        return this.a.length
    };
    j.o = h("a");
    j.getCenter = h("d");

    function y(a) {
        a.F = a.k.v(new google.maps.LatLngBounds(a.d, a.d))
    }
    j.getMap = h("c");

    function t(a, b, c) {
        a.k.extend(t, google.maps.OverlayView);
        this.j = b;
        this.fa = c || 0;
        this.u = a;
        this.d = d;
        this.c = a.getMap();
        this.B = this.b = d;
        this.t = !1;
        this.setMap(this.c)
    }
    j = t.prototype;
    j.onAdd = function () {
        this.b = document.createElement("DIV");
        if (this.t) this.b.style.cssText = A(this, B(this, this.d)), this.b.innerHTML = this.B.text;
        this.getPanes().overlayMouseTarget.appendChild(this.b);
        var a = this;
        google.maps.event.addDomListener(this.b, "click", function () {
            var b = a.u.k;
            google.maps.event.trigger(b, "clusterclick", a.u);
            b.O && a.c.fitBounds(a.u.getBounds())
        })
    };

    function B(a, b) {
        var c = a.getProjection().fromLatLngToDivPixel(b);
        c.x -= parseInt(a.p / 2, 10);
        c.y -= parseInt(a.h / 2, 10);
        return c
    }
    j.draw = function () {
        if (this.t) {
            var a = B(this, this.d);
            this.b.style.top = a.y + "px";
            this.b.style.left = a.x + "px"
        }
    };

    function z(a) {
        if (a.b) a.b.style.display = "none";
        a.t = !1
    }
    j.show = function () {
        if (this.b) this.b.style.cssText = A(this, B(this, this.d)), this.b.style.display = "";
        this.t = !0
    };
    j.remove = function () {
        this.setMap(d)
    };
    j.onRemove = function () {
        if (this.b && this.b.parentNode) z(this), this.b.parentNode.removeChild(this.b), this.b = d
    };
    j.setCenter = e("d");

    function A(a, b) {
        var c = [];
        c.push("background-image:url(" + a.da + ");");
        c.push("background-position:" + (a.D ? a.D : "0 0") + ";");
        typeof a.e === "object" ? (typeof a.e[0] === "number" && a.e[0] > 0 && a.e[0] < a.h ? c.push("height:" + (a.h - a.e[0]) + "px; padding-top:" + a.e[0] + "px;") : c.push("height:" + a.h + "px; line-height:" + a.h + "px;"), typeof a.e[1] === "number" && a.e[1] > 0 && a.e[1] < a.p ? c.push("width:" + (a.p - a.e[1]) + "px; padding-left:" + a.e[1] + "px;") : c.push("width:" + a.p + "px; text-align:center;")) : c.push("height:" + a.h + "px; line-height:" + a.h + "px; width:" + a.p + "px; text-align:center;");
        c.push("cursor:pointer; top:" + b.y + "px; left:" + b.x + "px; color:" + (a.M ? a.M : "black") + "; position:absolute; font-size:" + (a.N ? a.N : 11) + "px; font-family:Arial,sans-serif; font-weight:bold");
        return c.join("")
    }
    window.MarkerClusterer = k;
    k.prototype.addMarker = k.prototype.q;
    k.prototype.addMarkers = k.prototype.C;
    k.prototype.clearMarkers = k.prototype.R;
    k.prototype.fitMapToMarkers = k.prototype.S;
    k.prototype.getCalculator = k.prototype.H;
    k.prototype.getGridSize = k.prototype.w;
    k.prototype.getExtendedBounds = k.prototype.v;
    k.prototype.getMap = k.prototype.getMap;
    k.prototype.getMarkers = k.prototype.o;
    k.prototype.getMaxZoom = k.prototype.I;
    k.prototype.getStyles = k.prototype.z;
    k.prototype.getTotalClusters = k.prototype.U;
    k.prototype.getTotalMarkers = k.prototype.V;
    k.prototype.redraw = k.prototype.i;
    k.prototype.removeMarker = k.prototype.Y;
    k.prototype.removeMarkers = k.prototype.Z;
    k.prototype.resetViewport = k.prototype.m;
    k.prototype.repaint = k.prototype.L;
    k.prototype.setCalculator = k.prototype.$;
    k.prototype.setGridSize = k.prototype.aa;
    k.prototype.setMaxZoom = k.prototype.ba;
    k.prototype.onAdd = k.prototype.onAdd;
    k.prototype.draw = k.prototype.draw;
    s.prototype.getCenter = s.prototype.getCenter;
    s.prototype.getSize = s.prototype.T;
    s.prototype.getMarkers = s.prototype.o;
    t.prototype.onAdd = t.prototype.onAdd;
    t.prototype.draw = t.prototype.draw;
    t.prototype.onRemove = t.prototype.onRemove
})();