// Copyright (c) 2013 - 2015 Adobe Systems Incorporated. All rights reserved.
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

var Snap = (function(root) {
Snap.version = "0.4.0";
/*\
 * Snap
 [ method ]
 **
 * Creates a drawing surface or wraps existing SVG element.
 **
 - width (number|string) width of surface
 - height (number|string) height of surface
 * or
 - DOM (SVGElement) element to be wrapped into Snap structure
 * or
 - array (array) array of elements (will return set of elements)
 * or
 - query (string) CSS query selector
 = (object) @Element
\*/
function Snap(w, h) {
    if (w) {
        if (w.nodeType) {
            return wrap(w);
        }
        if (is(w, "array") && Snap.set) {
            return Snap.set.apply(Snap, w);
        }
        if (w instanceof Element) {
            return w;
        }
        if (h == null) {
            w = glob.doc.querySelector(String(w));
            return wrap(w);
        }
    }
    w = w == null ? "100%" : w;
    h = h == null ? "100%" : h;
    return new Paper(w, h);
}
Snap.toString = function () {
    return "Snap v" + this.version;
};
Snap._ = {};
var glob = {
    win: root.window,
    doc: root.window.document
};
Snap._.glob = glob;
var has = "hasOwnProperty",
    Str = String,
    toFloat = parseFloat,
    toInt = parseInt,
    math = Math,
    mmax = math.max,
    mmin = math.min,
    abs = math.abs,
    pow = math.pow,
    PI = math.PI,
    round = math.round,
    E = "",
    S = " ",
    objectToString = Object.prototype.toString,
    ISURL = /^url\(['"]?([^\)]+?)['"]?\)$/i,
    colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?\(\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*\)|hsba?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\)|hsla?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\))\s*$/i,
    bezierrg = /^(?:cubic-)?bezier\(([^,]+),([^,]+),([^,]+),([^\)]+)\)/,
    reURLValue = /^url\(#?([^)]+)\)$/,
    separator = Snap._.separator = /[,\s]+/,
    whitespace = /[\s]/g,
    commaSpaces = /[\s]*,[\s]*/,
    hsrg = {hs: 1, rg: 1},
    pathCommand = /([a-z])[\s,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\s]*,?[\s]*)+)/ig,
    tCommand = /([rstm])[\s,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\s]*,?[\s]*)+)/ig,
    pathValues = /(-?\d*\.?\d*(?:e[\-+]?\\d+)?)[\s]*,?[\s]*/ig,
    idgen = 0,
    idprefix = "S" + (+new Date).toString(36),
    ID = function (el) {
        return (el && el.type ? el.type : E) + idprefix + (idgen++).toString(36);
    },
    xlink = "http://www.w3.org/1999/xlink",
    xmlns = "http://www.w3.org/2000/svg",
    hub = {},
    URL = Snap.url = function (url) {
        return "url('#" + url + "')";
    };

function $(el, attr) {
    if (attr) {
        if (el == "#text") {
            el = glob.doc.createTextNode(attr.text || attr["#text"] || "");
        }
        if (el == "#comment") {
            el = glob.doc.createComment(attr.text || attr["#text"] || "");
        }
        if (typeof el == "string") {
            el = $(el);
        }
        if (typeof attr == "string") {
            if (el.nodeType == 1) {
                if (attr.substring(0, 6) == "xlink:") {
                    return el.getAttributeNS(xlink, attr.substring(6));
                }
                if (attr.substring(0, 4) == "xml:") {
                    return el.getAttributeNS(xmlns, attr.substring(4));
                }
                return el.getAttribute(attr);
            } else if (attr == "text") {
                return el.nodeValue;
            } else {
                return null;
            }
        }
        if (el.nodeType == 1) {
            for (var key in attr) if (attr[has](key)) {
                var val = Str(attr[key]);
                if (val) {
                    if (key.substring(0, 6) == "xlink:") {
                        el.setAttributeNS(xlink, key.substring(6), val);
                    } else if (key.substring(0, 4) == "xml:") {
                        el.setAttributeNS(xmlns, key.substring(4), val);
                    } else {
                        el.setAttribute(key, val);
                    }
                } else {
                    el.removeAttribute(key);
                }
            }
        } else if ("text" in attr) {
            el.nodeValue = attr.text;
        }
    } else {
        el = glob.doc.createElementNS(xmlns, el);
    }
    return el;
}
Snap._.$ = $;
Snap._.id = ID;
function getAttrs(el) {
    var attrs = el.attributes,
        name,
        out = {};
    for (var i = 0; i < attrs.length; i++) {
        if (attrs[i].namespaceURI == xlink) {
            name = "xlink:";
        } else {
            name = "";
        }
        name += attrs[i].name;
        out[name] = attrs[i].textContent;
    }
    return out;
}
function is(o, type) {
    type = Str.prototype.toLowerCase.call(type);
    if (type == "finite") {
        return isFinite(o);
    }
    if (type == "array" &&
        (o instanceof Array || Array.isArray && Array.isArray(o))) {
        return true;
    }
    return  (type == "null" && o === null) ||
            (type == typeof o && o !== null) ||
            (type == "object" && o === Object(o)) ||
            objectToString.call(o).slice(8, -1).toLowerCase() == type;
}
/*\
 * Snap.format
 [ method ]
 **
 * Replaces construction of type `{<name>}` to the corresponding argument
 **
 - token (string) string to format
 - json (object) object which properties are used as a replacement
 = (string) formatted string
 > Usage
 | // this draws a rectangular shape equivalent to "M10,20h40v50h-40z"
 | paper.path(Snap.format("M{x},{y}h{dim.width}v{dim.height}h{dim['negative width']}z", {
 |     x: 10,
 |     y: 20,
 |     dim: {
 |         width: 40,
 |         height: 50,
 |         "negative width": -40
 |     }
 | }));
\*/
Snap.format = (function () {
    var tokenRegex = /\{([^\}]+)\}/g,
        objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|\()|\[('|")(.+?)\2\])(\(\))?/g, // matches .xxxxx or ["xxxxx"] to run over object properties
        replacer = function (all, key, obj) {
            var res = obj;
            key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
                name = name || quotedName;
                if (res) {
                    if (name in res) {
                        res = res[name];
                    }
                    typeof res == "function" && isFunc && (res = res());
                }
            });
            res = (res == null || res == obj ? all : res) + "";
            return res;
        };
    return function (str, obj) {
        return Str(str).replace(tokenRegex, function (all, key) {
            return replacer(all, key, obj);
        });
    };
})();
function clone(obj) {
    if (typeof obj == "function" || Object(obj) !== obj) {
        return obj;
    }
    var res = new obj.constructor;
    for (var key in obj) if (obj[has](key)) {
        res[key] = clone(obj[key]);
    }
    return res;
}
Snap._.clone = clone;
function repush(array, item) {
    for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
        return array.push(array.splice(i, 1)[0]);
    }
}
function cacher(f, scope, postprocessor) {
    function newf() {
        var arg = Array.prototype.slice.call(arguments, 0),
            args = arg.join("\u2400"),
            cache = newf.cache = newf.cache || {},
            count = newf.count = newf.count || [];
        if (cache[has](args)) {
            repush(count, args);
            return postprocessor ? postprocessor(cache[args]) : cache[args];
        }
        count.length >= 1e3 && delete cache[count.shift()];
        count.push(args);
        cache[args] = f.apply(scope, arg);
        return postprocessor ? postprocessor(cache[args]) : cache[args];
    }
    return newf;
}
Snap._.cacher = cacher;
function angle(x1, y1, x2, y2, x3, y3) {
    if (x3 == null) {
        var x = x1 - x2,
            y = y1 - y2;
        if (!x && !y) {
            return 0;
        }
        return (180 + math.atan2(-y, -x) * 180 / PI + 360) % 360;
    } else {
        return angle(x1, y1, x3, y3) - angle(x2, y2, x3, y3);
    }
}
function rad(deg) {
    return deg % 360 * PI / 180;
}
function deg(rad) {
    return rad * 180 / PI % 360;
}
function x_y() {
    return this.x + S + this.y;
}
function x_y_w_h() {
    return this.x + S + this.y + S + this.width + " \xd7 " + this.height;
}

/*\
 * Snap.rad
 [ method ]
 **
 * Transform angle to radians
 - deg (number) angle in degrees
 = (number) angle in radians
\*/
Snap.rad = rad;
/*\
 * Snap.deg
 [ method ]
 **
 * Transform angle to degrees
 - rad (number) angle in radians
 = (number) angle in degrees
\*/
Snap.deg = deg;
/*\
 * Snap.sin
 [ method ]
 **
 * Equivalent to `Math.sin()` only works with degrees, not radians.
 - angle (number) angle in degrees
 = (number) sin
\*/
Snap.sin = function (angle) {
    return math.sin(Snap.rad(angle));
};
/*\
 * Snap.tan
 [ method ]
 **
 * Equivalent to `Math.tan()` only works with degrees, not radians.
 - angle (number) angle in degrees
 = (number) tan
\*/
Snap.tan = function (angle) {
    return math.tan(Snap.rad(angle));
};
/*\
 * Snap.cos
 [ method ]
 **
 * Equivalent to `Math.cos()` only works with degrees, not radians.
 - angle (number) angle in degrees
 = (number) cos
\*/
Snap.cos = function (angle) {
    return math.cos(Snap.rad(angle));
};
/*\
 * Snap.asin
 [ method ]
 **
 * Equivalent to `Math.asin()` only works with degrees, not radians.
 - num (number) value
 = (number) asin in degrees
\*/
Snap.asin = function (num) {
    return Snap.deg(math.asin(num));
};
/*\
 * Snap.acos
 [ method ]
 **
 * Equivalent to `Math.acos()` only works with degrees, not radians.
 - num (number) value
 = (number) acos in degrees
\*/
Snap.acos = function (num) {
    return Snap.deg(math.acos(num));
};
/*\
 * Snap.atan
 [ method ]
 **
 * Equivalent to `Math.atan()` only works with degrees, not radians.
 - num (number) value
 = (number) atan in degrees
\*/
Snap.atan = function (num) {
    return Snap.deg(math.atan(num));
};
/*\
 * Snap.atan2
 [ method ]
 **
 * Equivalent to `Math.atan2()` only works with degrees, not radians.
 - num (number) value
 = (number) atan2 in degrees
\*/
Snap.atan2 = function (num) {
    return Snap.deg(math.atan2(num));
};
/*\
 * Snap.angle
 [ method ]
 **
 * Returns an angle between two or three points
 > Parameters
 - x1 (number) x coord of first point
 - y1 (number) y coord of first point
 - x2 (number) x coord of second point
 - y2 (number) y coord of second point
 - x3 (number) #optional x coord of third point
 - y3 (number) #optional y coord of third point
 = (number) angle in degrees
\*/
Snap.angle = angle;
/*\
 * Snap.len
 [ method ]
 **
 * Returns distance between two points
 > Parameters
 - x1 (number) x coord of first point
 - y1 (number) y coord of first point
 - x2 (number) x coord of second point
 - y2 (number) y coord of second point
 = (number) distance
\*/
Snap.len = function (x1, y1, x2, y2) {
    return Math.sqrt(Snap.len2(x1, y1, x2, y2));
};
/*\
 * Snap.len2
 [ method ]
 **
 * Returns squared distance between two points
 > Parameters
 - x1 (number) x coord of first point
 - y1 (number) y coord of first point
 - x2 (number) x coord of second point
 - y2 (number) y coord of second point
 = (number) distance
\*/
Snap.len2 = function (x1, y1, x2, y2) {
    return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
};
/*\
 * Snap.closestPoint
 [ method ]
 **
 * Returns closest point to a given one on a given path.
 > Parameters
 - path (Element) path element
 - x (number) x coord of a point
 - y (number) y coord of a point
 = (object) in format
 {
    x (number) x coord of the point on the path
    y (number) y coord of the point on the path
    length (number) length of the path to the point
    distance (number) distance from the given point to the path
 }
\*/
// Copied from http://bl.ocks.org/mbostock/8027637
Snap.closestPoint = function (path, x, y) {
    function distance2(p) {
        var dx = p.x - x,
            dy = p.y - y;
        return dx * dx + dy * dy;
    }
    var pathNode = path.node,
        pathLength = pathNode.getTotalLength(),
        precision = pathLength / pathNode.pathSegList.numberOfItems * .125,
        best,
        bestLength,
        bestDistance = Infinity;

    // linear scan for coarse approximation
    for (var scan, scanLength = 0, scanDistance; scanLength <= pathLength; scanLength += precision) {
        if ((scanDistance = distance2(scan = pathNode.getPointAtLength(scanLength))) < bestDistance) {
            best = scan, bestLength = scanLength, bestDistance = scanDistance;
        }
    }

    // binary search for precise estimate
    precision *= .5;
    while (precision > .5) {
        var before,
            after,
            beforeLength,
            afterLength,
            beforeDistance,
            afterDistance;
        if ((beforeLength = bestLength - precision) >= 0 && (beforeDistance = distance2(before = pathNode.getPointAtLength(beforeLength))) < bestDistance) {
            best = before, bestLength = beforeLength, bestDistance = beforeDistance;
        } else if ((afterLength = bestLength + precision) <= pathLength && (afterDistance = distance2(after = pathNode.getPointAtLength(afterLength))) < bestDistance) {
            best = after, bestLength = afterLength, bestDistance = afterDistance;
        } else {
            precision *= .5;
        }
    }

    best = {
        x: best.x,
        y: best.y,
        length: bestLength,
        distance: Math.sqrt(bestDistance)
    };
    return best;
}
/*\
 * Snap.is
 [ method ]
 **
 * Handy replacement for the `typeof` operator
 - o (…) any object or primitive
 - type (string) name of the type, e.g., `string`, `function`, `number`, etc.
 = (boolean) `true` if given value is of given type
\*/
Snap.is = is;
/*\
 * Snap.snapTo
 [ method ]
 **
 * Snaps given value to given grid
 - values (array|number) given array of values or step of the grid
 - value (number) value to adjust
 - tolerance (number) #optional maximum distance to the target value that would trigger the snap. Default is `10`.
 = (number) adjusted value
\*/
Snap.snapTo = function (values, value, tolerance) {
    tolerance = is(tolerance, "finite") ? tolerance : 10;
    if (is(values, "array")) {
        var i = values.length;
        while (i--) if (abs(values[i] - value) <= tolerance) {
            return values[i];
        }
    } else {
        values = +values;
        var rem = value % values;
        if (rem < tolerance) {
            return value - rem;
        }
        if (rem > values - tolerance) {
            return value - rem + values;
        }
    }
    return value;
};
// Colour
/*\
 * Snap.getRGB
 [ method ]
 **
 * Parses color string as RGB object
 - color (string) color string in one of the following formats:
 # <ul>
 #     <li>Color name (<code>red</code>, <code>green</code>, <code>cornflowerblue</code>, etc)</li>
 #     <li>#••• — shortened HTML color: (<code>#000</code>, <code>#fc0</code>, etc.)</li>
 #     <li>#•••••• — full length HTML color: (<code>#000000</code>, <code>#bd2300</code>)</li>
 #     <li>rgb(•••, •••, •••) — red, green and blue channels values: (<code>rgb(200,&nbsp;100,&nbsp;0)</code>)</li>
 #     <li>rgba(•••, •••, •••, •••) — also with opacity</li>
 #     <li>rgb(•••%, •••%, •••%) — same as above, but in %: (<code>rgb(100%,&nbsp;175%,&nbsp;0%)</code>)</li>
 #     <li>rgba(•••%, •••%, •••%, •••%) — also with opacity</li>
 #     <li>hsb(•••, •••, •••) — hue, saturation and brightness values: (<code>hsb(0.5,&nbsp;0.25,&nbsp;1)</code>)</li>
 #     <li>hsba(•••, •••, •••, •••) — also with opacity</li>
 #     <li>hsb(•••%, •••%, •••%) — same as above, but in %</li>
 #     <li>hsba(•••%, •••%, •••%, •••%) — also with opacity</li>
 #     <li>hsl(•••, •••, •••) — hue, saturation and luminosity values: (<code>hsb(0.5,&nbsp;0.25,&nbsp;0.5)</code>)</li>
 #     <li>hsla(•••, •••, •••, •••) — also with opacity</li>
 #     <li>hsl(•••%, •••%, •••%) — same as above, but in %</li>
 #     <li>hsla(•••%, •••%, •••%, •••%) — also with opacity</li>
 # </ul>
 * Note that `%` can be used any time: `rgb(20%, 255, 50%)`.
 = (object) RGB object in the following format:
 o {
 o     r (number) red,
 o     g (number) green,
 o     b (number) blue,
 o     hex (string) color in HTML/CSS format: #••••••,
 o     error (boolean) true if string can't be parsed
 o }
\*/
Snap.getRGB = cacher(function (colour) {
    if (!colour || !!((colour = Str(colour)).indexOf("-") + 1)) {
        return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
    }
    if (colour == "none") {
        return {r: -1, g: -1, b: -1, hex: "none", toString: rgbtoString};
    }
    !(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
    if (!colour) {
        return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
    }
    var res,
        red,
        green,
        blue,
        opacity,
        t,
        values,
        rgb = colour.match(colourRegExp);
    if (rgb) {
        if (rgb[2]) {
            blue = toInt(rgb[2].substring(5), 16);
            green = toInt(rgb[2].substring(3, 5), 16);
            red = toInt(rgb[2].substring(1, 3), 16);
        }
        if (rgb[3]) {
            blue = toInt((t = rgb[3].charAt(3)) + t, 16);
            green = toInt((t = rgb[3].charAt(2)) + t, 16);
            red = toInt((t = rgb[3].charAt(1)) + t, 16);
        }
        if (rgb[4]) {
            values = rgb[4].split(commaSpaces);
            red = toFloat(values[0]);
            values[0].slice(-1) == "%" && (red *= 2.55);
            green = toFloat(values[1]);
            values[1].slice(-1) == "%" && (green *= 2.55);
            blue = toFloat(values[2]);
            values[2].slice(-1) == "%" && (blue *= 2.55);
            rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = toFloat(values[3]));
            values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
        }
        if (rgb[5]) {
            values = rgb[5].split(commaSpaces);
            red = toFloat(values[0]);
            values[0].slice(-1) == "%" && (red /= 100);
            green = toFloat(values[1]);
            values[1].slice(-1) == "%" && (green /= 100);
            blue = toFloat(values[2]);
            values[2].slice(-1) == "%" && (blue /= 100);
            (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
            rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = toFloat(values[3]));
            values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
            return Snap.hsb2rgb(red, green, blue, opacity);
        }
        if (rgb[6]) {
            values = rgb[6].split(commaSpaces);
            red = toFloat(values[0]);
            values[0].slice(-1) == "%" && (red /= 100);
            green = toFloat(values[1]);
            values[1].slice(-1) == "%" && (green /= 100);
            blue = toFloat(values[2]);
            values[2].slice(-1) == "%" && (blue /= 100);
            (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
            rgb[1].toLowerCase().slice(0, 4) == "hsla" && (opacity = toFloat(values[3]));
            values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
            return Snap.hsl2rgb(red, green, blue, opacity);
        }
        red = mmin(math.round(red), 255);
        green = mmin(math.round(green), 255);
        blue = mmin(math.round(blue), 255);
        opacity = mmin(mmax(opacity, 0), 1);
        rgb = {r: red, g: green, b: blue, toString: rgbtoString};
        rgb.hex = "#" + (16777216 | blue | (green << 8) | (red << 16)).toString(16).slice(1);
        rgb.opacity = is(opacity, "finite") ? opacity : 1;
        return rgb;
    }
    return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
}, Snap);
/*\
 * Snap.hsb
 [ method ]
 **
 * Converts HSB values to a hex representation of the color
 - h (number) hue
 - s (number) saturation
 - b (number) value or brightness
 = (string) hex representation of the color
\*/
Snap.hsb = cacher(function (h, s, b) {
    return Snap.hsb2rgb(h, s, b).hex;
});
/*\
 * Snap.hsl
 [ method ]
 **
 * Converts HSL values to a hex representation of the color
 - h (number) hue
 - s (number) saturation
 - l (number) luminosity
 = (string) hex representation of the color
\*/
Snap.hsl = cacher(function (h, s, l) {
    return Snap.hsl2rgb(h, s, l).hex;
});
/*\
 * Snap.rgb
 [ method ]
 **
 * Converts RGB values to a hex representation of the color
 - r (number) red
 - g (number) green
 - b (number) blue
 = (string) hex representation of the color
\*/
Snap.rgb = cacher(function (r, g, b, o) {
    if (is(o, "finite")) {
        var round = math.round;
        return "rgba(" + [round(r), round(g), round(b), +o.toFixed(2)] + ")";
    }
    return "#" + (16777216 | b | (g << 8) | (r << 16)).toString(16).slice(1);
});
var toHex = function (color) {
    var i = glob.doc.getElementsByTagName("head")[0] || glob.doc.getElementsByTagName("svg")[0],
        red = "rgb(255, 0, 0)";
    toHex = cacher(function (color) {
        if (color.toLowerCase() == "red") {
            return red;
        }
        i.style.color = red;
        i.style.color = color;
        var out = glob.doc.defaultView.getComputedStyle(i, E).getPropertyValue("color");
        return out == red ? null : out;
    });
    return toHex(color);
},
hsbtoString = function () {
    return "hsb(" + [this.h, this.s, this.b] + ")";
},
hsltoString = function () {
    return "hsl(" + [this.h, this.s, this.l] + ")";
},
rgbtoString = function () {
    return this.opacity == 1 || this.opacity == null ?
            this.hex :
            "rgba(" + [this.r, this.g, this.b, this.opacity] + ")";
},
prepareRGB = function (r, g, b) {
    if (g == null && is(r, "object") && "r" in r && "g" in r && "b" in r) {
        b = r.b;
        g = r.g;
        r = r.r;
    }
    if (g == null && is(r, string)) {
        var clr = Snap.getRGB(r);
        r = clr.r;
        g = clr.g;
        b = clr.b;
    }
    if (r > 1 || g > 1 || b > 1) {
        r /= 255;
        g /= 255;
        b /= 255;
    }
    
    return [r, g, b];
},
packageRGB = function (r, g, b, o) {
    r = math.round(r * 255);
    g = math.round(g * 255);
    b = math.round(b * 255);
    var rgb = {
        r: r,
        g: g,
        b: b,
        opacity: is(o, "finite") ? o : 1,
        hex: Snap.rgb(r, g, b),
        toString: rgbtoString
    };
    is(o, "finite") && (rgb.opacity = o);
    return rgb;
};
/*\
 * Snap.color
 [ method ]
 **
 * Parses the color string and returns an object featuring the color's component values
 - clr (string) color string in one of the supported formats (see @Snap.getRGB)
 = (object) Combined RGB/HSB object in the following format:
 o {
 o     r (number) red,
 o     g (number) green,
 o     b (number) blue,
 o     hex (string) color in HTML/CSS format: #••••••,
 o     error (boolean) `true` if string can't be parsed,
 o     h (number) hue,
 o     s (number) saturation,
 o     v (number) value (brightness),
 o     l (number) lightness
 o }
\*/
Snap.color = function (clr) {
    var rgb;
    if (is(clr, "object") && "h" in clr && "s" in clr && "b" in clr) {
        rgb = Snap.hsb2rgb(clr);
        clr.r = rgb.r;
        clr.g = rgb.g;
        clr.b = rgb.b;
        clr.opacity = 1;
        clr.hex = rgb.hex;
    } else if (is(clr, "object") && "h" in clr && "s" in clr && "l" in clr) {
        rgb = Snap.hsl2rgb(clr);
        clr.r = rgb.r;
        clr.g = rgb.g;
        clr.b = rgb.b;
        clr.opacity = 1;
        clr.hex = rgb.hex;
    } else {
        if (is(clr, "string")) {
            clr = Snap.getRGB(clr);
        }
        if (is(clr, "object") && "r" in clr && "g" in clr && "b" in clr && !("error" in clr)) {
            rgb = Snap.rgb2hsl(clr);
            clr.h = rgb.h;
            clr.s = rgb.s;
            clr.l = rgb.l;
            rgb = Snap.rgb2hsb(clr);
            clr.v = rgb.b;
        } else {
            clr = {hex: "none"};
            clr.r = clr.g = clr.b = clr.h = clr.s = clr.v = clr.l = -1;
            clr.error = 1;
        }
    }
    clr.toString = rgbtoString;
    return clr;
};
/*\
 * Snap.hsb2rgb
 [ method ]
 **
 * Converts HSB values to an RGB object
 - h (number) hue
 - s (number) saturation
 - v (number) value or brightness
 = (object) RGB object in the following format:
 o {
 o     r (number) red,
 o     g (number) green,
 o     b (number) blue,
 o     hex (string) color in HTML/CSS format: #••••••
 o }
\*/
Snap.hsb2rgb = function (h, s, v, o) {
    if (is(h, "object") && "h" in h && "s" in h && "b" in h) {
        v = h.b;
        s = h.s;
        o = h.o;
        h = h.h;
    }
    h *= 360;
    var R, G, B, X, C;
    h = (h % 360) / 60;
    C = v * s;
    X = C * (1 - abs(h % 2 - 1));
    R = G = B = v - C;

    h = ~~h;
    R += [C, X, 0, 0, X, C][h];
    G += [X, C, C, X, 0, 0][h];
    B += [0, 0, X, C, C, X][h];
    return packageRGB(R, G, B, o);
};
/*\
 * Snap.hsl2rgb
 [ method ]
 **
 * Converts HSL values to an RGB object
 - h (number) hue
 - s (number) saturation
 - l (number) luminosity
 = (object) RGB object in the following format:
 o {
 o     r (number) red,
 o     g (number) green,
 o     b (number) blue,
 o     hex (string) color in HTML/CSS format: #••••••
 o }
\*/
Snap.hsl2rgb = function (h, s, l, o) {
    if (is(h, "object") && "h" in h && "s" in h && "l" in h) {
        l = h.l;
        s = h.s;
        h = h.h;
    }
    if (h > 1 || s > 1 || l > 1) {
        h /= 360;
        s /= 100;
        l /= 100;
    }
    h *= 360;
    var R, G, B, X, C;
    h = (h % 360) / 60;
    C = 2 * s * (l < .5 ? l : 1 - l);
    X = C * (1 - abs(h % 2 - 1));
    R = G = B = l - C / 2;

    h = ~~h;
    R += [C, X, 0, 0, X, C][h];
    G += [X, C, C, X, 0, 0][h];
    B += [0, 0, X, C, C, X][h];
    return packageRGB(R, G, B, o);
};
/*\
 * Snap.rgb2hsb
 [ method ]
 **
 * Converts RGB values to an HSB object
 - r (number) red
 - g (number) green
 - b (number) blue
 = (object) HSB object in the following format:
 o {
 o     h (number) hue,
 o     s (number) saturation,
 o     b (number) brightness
 o }
\*/
Snap.rgb2hsb = function (r, g, b) {
    b = prepareRGB(r, g, b);
    r = b[0];
    g = b[1];
    b = b[2];

    var H, S, V, C;
    V = mmax(r, g, b);
    C = V - mmin(r, g, b);
    H = (C == 0 ? null :
         V == r ? (g - b) / C :
         V == g ? (b - r) / C + 2 :
                  (r - g) / C + 4
        );
    H = ((H + 360) % 6) * 60 / 360;
    S = C == 0 ? 0 : C / V;
    return {h: H, s: S, b: V, toString: hsbtoString};
};
/*\
 * Snap.rgb2hsl
 [ method ]
 **
 * Converts RGB values to an HSL object
 - r (number) red
 - g (number) green
 - b (number) blue
 = (object) HSL object in the following format:
 o {
 o     h (number) hue,
 o     s (number) saturation,
 o     l (number) luminosity
 o }
\*/
Snap.rgb2hsl = function (r, g, b) {
    b = prepareRGB(r, g, b);
    r = b[0];
    g = b[1];
    b = b[2];

    var H, S, L, M, m, C;
    M = mmax(r, g, b);
    m = mmin(r, g, b);
    C = M - m;
    H = (C == 0 ? null :
         M == r ? (g - b) / C :
         M == g ? (b - r) / C + 2 :
                  (r - g) / C + 4);
    H = ((H + 360) % 6) * 60 / 360;
    L = (M + m) / 2;
    S = (C == 0 ? 0 :
         L < .5 ? C / (2 * L) :
                  C / (2 - 2 * L));
    return {h: H, s: S, l: L, toString: hsltoString};
};

// Transformations
/*\
 * Snap.parsePathString
 [ method ]
 **
 * Utility method
 **
 * Parses given path string into an array of arrays of path segments
 - pathString (string|array) path string or array of segments (in the last case it is returned straight away)
 = (array) array of segments
\*/
Snap.parsePathString = function (pathString) {
    if (!pathString) {
        return null;
    }
    var pth = Snap.path(pathString);
    if (pth.arr) {
        return Snap.path.clone(pth.arr);
    }
    
    var paramCounts = {a: 7, c: 6, o: 2, h: 1, l: 2, m: 2, r: 4, q: 4, s: 4, t: 2, v: 1, u: 3, z: 0},
        data = [];
    if (is(pathString, "array") && is(pathString[0], "array")) { // rough assumption
        data = Snap.path.clone(pathString);
    }
    if (!data.length) {
        Str(pathString).replace(pathCommand, function (a, b, c) {
            var params = [],
                name = b.toLowerCase();
            c.replace(pathValues, function (a, b) {
                b && params.push(+b);
            });
            if (name == "m" && params.length > 2) {
                data.push([b].concat(params.splice(0, 2)));
                name = "l";
                b = b == "m" ? "l" : "L";
            }
            if (name == "o" && params.length == 1) {
                data.push([b, params[0]]);
            }
            if (name == "r") {
                data.push([b].concat(params));
            } else while (params.length >= paramCounts[name]) {
                data.push([b].concat(params.splice(0, paramCounts[name])));
                if (!paramCounts[name]) {
                    break;
                }
            }
        });
    }
    data.toString = Snap.path.toString;
    pth.arr = Snap.path.clone(data);
    return data;
};
/*\
 * Snap.parseTransformString
 [ method ]
 **
 * Utility method
 **
 * Parses given transform string into an array of transformations
 - TString (string|array) transform string or array of transformations (in the last case it is returned straight away)
 = (array) array of transformations
\*/
var parseTransformString = Snap.parseTransformString = function (TString) {
    if (!TString) {
        return null;
    }
    var paramCounts = {r: 3, s: 4, t: 2, m: 6},
        data = [];
    if (is(TString, "array") && is(TString[0], "array")) { // rough assumption
        data = Snap.path.clone(TString);
    }
    if (!data.length) {
        Str(TString).replace(tCommand, function (a, b, c) {
            var params = [],
                name = b.toLowerCase();
            c.replace(pathValues, function (a, b) {
                b && params.push(+b);
            });
            data.push([b].concat(params));
        });
    }
    data.toString = Snap.path.toString;
    return data;
};
function svgTransform2string(tstr) {
    var res = [];
    tstr = tstr.replace(/(?:^|\s)(\w+)\(([^)]+)\)/g, function (all, name, params) {
        params = params.split(/\s*,\s*|\s+/);
        if (name == "rotate" && params.length == 1) {
            params.push(0, 0);
        }
        if (name == "scale") {
            if (params.length > 2) {
                params = params.slice(0, 2);
            } else if (params.length == 2) {
                params.push(0, 0);
            }
            if (params.length == 1) {
                params.push(params[0], 0, 0);
            }
        }
        if (name == "skewX") {
            res.push(["m", 1, 0, math.tan(rad(params[0])), 1, 0, 0]);
        } else if (name == "skewY") {
            res.push(["m", 1, math.tan(rad(params[0])), 0, 1, 0, 0]);
        } else {
            res.push([name.charAt(0)].concat(params));
        }
        return all;
    });
    return res;
}
Snap._.svgTransform2string = svgTransform2string;
Snap._.rgTransform = /^[a-z][\s]*-?\.?\d/i;
function transform2matrix(tstr, bbox) {
    var tdata = parseTransformString(tstr),
        m = new Snap.Matrix;
    if (tdata) {
        for (var i = 0, ii = tdata.length; i < ii; i++) {
            var t = tdata[i],
                tlen = t.length,
                command = Str(t[0]).toLowerCase(),
                absolute = t[0] != command,
                inver = absolute ? m.invert() : 0,
                x1,
                y1,
                x2,
                y2,
                bb;
            if (command == "t" && tlen == 2){
                m.translate(t[1], 0);
            } else if (command == "t" && tlen == 3) {
                if (absolute) {
                    x1 = inver.x(0, 0);
                    y1 = inver.y(0, 0);
                    x2 = inver.x(t[1], t[2]);
                    y2 = inver.y(t[1], t[2]);
                    m.translate(x2 - x1, y2 - y1);
                } else {
                    m.translate(t[1], t[2]);
                }
            } else if (command == "r") {
                if (tlen == 2) {
                    bb = bb || bbox;
                    m.rotate(t[1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                } else if (tlen == 4) {
                    if (absolute) {
                        x2 = inver.x(t[2], t[3]);
                        y2 = inver.y(t[2], t[3]);
                        m.rotate(t[1], x2, y2);
                    } else {
                        m.rotate(t[1], t[2], t[3]);
                    }
                }
            } else if (command == "s") {
                if (tlen == 2 || tlen == 3) {
                    bb = bb || bbox;
                    m.scale(t[1], t[tlen - 1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                } else if (tlen == 4) {
                    if (absolute) {
                        x2 = inver.x(t[2], t[3]);
                        y2 = inver.y(t[2], t[3]);
                        m.scale(t[1], t[1], x2, y2);
                    } else {
                        m.scale(t[1], t[1], t[2], t[3]);
                    }
                } else if (tlen == 5) {
                    if (absolute) {
                        x2 = inver.x(t[3], t[4]);
                        y2 = inver.y(t[3], t[4]);
                        m.scale(t[1], t[2], x2, y2);
                    } else {
                        m.scale(t[1], t[2], t[3], t[4]);
                    }
                }
            } else if (command == "m" && tlen == 7) {
                m.add(t[1], t[2], t[3], t[4], t[5], t[6]);
            }
        }
    }
    return m;
}
Snap._.transform2matrix = transform2matrix;
Snap._unit2px = unit2px;
var contains = glob.doc.contains || glob.doc.compareDocumentPosition ?
    function (a, b) {
        var adown = a.nodeType == 9 ? a.documentElement : a,
            bup = b && b.parentNode;
            return a == bup || !!(bup && bup.nodeType == 1 && (
                adown.contains ?
                    adown.contains(bup) :
                    a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16
            ));
    } :
    function (a, b) {
        if (b) {
            while (b) {
                b = b.parentNode;
                if (b == a) {
                    return true;
                }
            }
        }
        return false;
    };
function getSomeDefs(el) {
    var p = (el.node.ownerSVGElement && wrap(el.node.ownerSVGElement)) ||
            (el.node.parentNode && wrap(el.node.parentNode)) ||
            Snap.select("svg") ||
            Snap(0, 0),
        pdefs = p.select("defs"),
        defs  = pdefs == null ? false : pdefs.node;
    if (!defs) {
        defs = make("defs", p.node).node;
    }
    return defs;
}
function getSomeSVG(el) {
    return el.node.ownerSVGElement && wrap(el.node.ownerSVGElement) || Snap.select("svg");
}
Snap._.getSomeDefs = getSomeDefs;
Snap._.getSomeSVG = getSomeSVG;
function unit2px(el, name, value) {
    var svg = getSomeSVG(el).node,
        out = {},
        mgr = svg.querySelector(".svg---mgr");
    if (!mgr) {
        mgr = $("rect");
        $(mgr, {x: -9e9, y: -9e9, width: 10, height: 10, "class": "svg---mgr", fill: "none"});
        svg.appendChild(mgr);
    }
    function getW(val) {
        if (val == null) {
            return E;
        }
        if (val == +val) {
            return val;
        }
        $(mgr, {width: val});
        try {
            return mgr.getBBox().width;
        } catch (e) {
            return 0;
        }
    }
    function getH(val) {
        if (val == null) {
            return E;
        }
        if (val == +val) {
            return val;
        }
        $(mgr, {height: val});
        try {
            return mgr.getBBox().height;
        } catch (e) {
            return 0;
        }
    }
    function set(nam, f) {
        if (name == null) {
            out[nam] = f(el.attr(nam) || 0);
        } else if (nam == name) {
            out = f(value == null ? el.attr(nam) || 0 : value);
        }
    }
    switch (el.type) {
        case "rect":
            set("rx", getW);
            set("ry", getH);
        case "image":
            set("width", getW);
            set("height", getH);
        case "text":
            set("x", getW);
            set("y", getH);
        break;
        case "circle":
            set("cx", getW);
            set("cy", getH);
            set("r", getW);
        break;
        case "ellipse":
            set("cx", getW);
            set("cy", getH);
            set("rx", getW);
            set("ry", getH);
        break;
        case "line":
            set("x1", getW);
            set("x2", getW);
            set("y1", getH);
            set("y2", getH);
        break;
        case "marker":
            set("refX", getW);
            set("markerWidth", getW);
            set("refY", getH);
            set("markerHeight", getH);
        break;
        case "radialGradient":
            set("fx", getW);
            set("fy", getH);
        break;
        case "tspan":
            set("dx", getW);
            set("dy", getH);
        break;
        default:
            set(name, getW);
    }
    svg.removeChild(mgr);
    return out;
}
/*\
 * Snap.select
 [ method ]
 **
 * Wraps a DOM element specified by CSS selector as @Element
 - query (string) CSS selector of the element
 = (Element) the current element
\*/
Snap.select = function (query) {
    query = Str(query).replace(/([^\\]):/g, "$1\\:");
    return wrap(glob.doc.querySelector(query));
};
/*\
 * Snap.selectAll
 [ method ]
 **
 * Wraps DOM elements specified by CSS selector as set or array of @Element
 - query (string) CSS selector of the element
 = (Element) the current element
\*/
Snap.selectAll = function (query) {
    var nodelist = glob.doc.querySelectorAll(query),
        set = (Snap.set || Array)();
    for (var i = 0; i < nodelist.length; i++) {
        set.push(wrap(nodelist[i]));
    }
    return set;
};

function add2group(list) {
    if (!is(list, "array")) {
        list = Array.prototype.slice.call(arguments, 0);
    }
    var i = 0,
        j = 0,
        node = this.node;
    while (this[i]) delete this[i++];
    for (i = 0; i < list.length; i++) {
        if (list[i].type == "set") {
            list[i].forEach(function (el) {
                node.appendChild(el.node);
            });
        } else {
            node.appendChild(list[i].node);
        }
    }
    var children = node.childNodes;
    for (i = 0; i < children.length; i++) {
        this[j++] = wrap(children[i]);
    }
    return this;
}
// Hub garbage collector every 10s
setInterval(function () {
    for (var key in hub) if (hub[has](key)) {
        var el = hub[key],
            node = el.node;
        if (el.type != "svg" && !node.ownerSVGElement || el.type == "svg" && (!node.parentNode || "ownerSVGElement" in node.parentNode && !node.ownerSVGElement)) {
            delete hub[key];
        }
    }
}, 1e4);
function Element(el) {
    if (el.snap in hub) {
        return hub[el.snap];
    }
    var svg;
    try {
        svg = el.ownerSVGElement;
    } catch(e) {}
    /*\
     * Element.node
     [ property (object) ]
     **
     * Gives you a reference to the DOM object, so you can assign event handlers or just mess around.
     > Usage
     | // draw a circle at coordinate 10,10 with radius of 10
     | var c = paper.circle(10, 10, 10);
     | c.node.onclick = function () {
     |     c.attr("fill", "red");
     | };
    \*/
    this.node = el;
    if (svg) {
        this.paper = new Paper(svg);
    }
    /*\
     * Element.type
     [ property (string) ]
     **
     * SVG tag name of the given element.
    \*/
    this.type = el.tagName || el.nodeName;
    var id = this.id = ID(this);
    this.anims = {};
    this._ = {
        transform: []
    };
    el.snap = id;
    hub[id] = this;
    if (this.type == "g") {
        this.add = add2group;
    }
    if (this.type in {g: 1, mask: 1, pattern: 1, symbol: 1}) {
        for (var method in Paper.prototype) if (Paper.prototype[has](method)) {
            this[method] = Paper.prototype[method];
        }
    }
}
   /*\
     * Element.attr
     [ method ]
     **
     * Gets or sets given attributes of the element.
     **
     - params (object) contains key-value pairs of attributes you want to set
     * or
     - param (string) name of the attribute
     = (Element) the current element
     * or
     = (string) value of attribute
     > Usage
     | el.attr({
     |     fill: "#fc0",
     |     stroke: "#000",
     |     strokeWidth: 2, // CamelCase...
     |     "fill-opacity": 0.5, // or dash-separated names
     |     width: "*=2" // prefixed values
     | });
     | console.log(el.attr("fill")); // #fc0
     * Prefixed values in format `"+=10"` supported. All four operations
     * (`+`, `-`, `*` and `/`) could be used. Optionally you can use units for `+`
     * and `-`: `"+=2em"`.
    \*/
    Element.prototype.attr = function (params, value) {
        var el = this,
            node = el.node;
        if (!params) {
            if (node.nodeType != 1) {
                return {
                    text: node.nodeValue
                };
            }
            var attr = node.attributes,
                out = {};
            for (var i = 0, ii = attr.length; i < ii; i++) {
                out[attr[i].nodeName] = attr[i].nodeValue;
            }
            return out;
        }
        if (is(params, "string")) {
            if (arguments.length > 1) {
                var json = {};
                json[params] = value;
                params = json;
            } else {
                return eve("snap.util.getattr." + params, el).firstDefined();
            }
        }
        for (var att in params) {
            if (params[has](att)) {
                eve("snap.util.attr." + att, el, params[att]);
            }
        }
        return el;
    };
/*\
 * Snap.parse
 [ method ]
 **
 * Parses SVG fragment and converts it into a @Fragment
 **
 - svg (string) SVG string
 = (Fragment) the @Fragment
\*/
Snap.parse = function (svg) {
    var f = glob.doc.createDocumentFragment(),
        full = true,
        div = glob.doc.createElement("div");
    svg = Str(svg);
    if (!svg.match(/^\s*<\s*svg(?:\s|>)/)) {
        svg = "<svg>" + svg + "</svg>";
        full = false;
    }
    div.innerHTML = svg;
    svg = div.getElementsByTagName("svg")[0];
    if (svg) {
        if (full) {
            f = svg;
        } else {
            while (svg.firstChild) {
                f.appendChild(svg.firstChild);
            }
        }
    }
    return new Fragment(f);
};
function Fragment(frag) {
    this.node = frag;
}
/*\
 * Snap.fragment
 [ method ]
 **
 * Creates a DOM fragment from a given list of elements or strings
 **
 - varargs (…) SVG string
 = (Fragment) the @Fragment
\*/
Snap.fragment = function () {
    var args = Array.prototype.slice.call(arguments, 0),
        f = glob.doc.createDocumentFragment();
    for (var i = 0, ii = args.length; i < ii; i++) {
        var item = args[i];
        if (item.node && item.node.nodeType) {
            f.appendChild(item.node);
        }
        if (item.nodeType) {
            f.appendChild(item);
        }
        if (typeof item == "string") {
            f.appendChild(Snap.parse(item).node);
        }
    }
    return new Fragment(f);
};

function make(name, parent) {
    var res = $(name);
    parent.appendChild(res);
    var el = wrap(res);
    return el;
}
function Paper(w, h) {
    var res,
        desc,
        defs,
        proto = Paper.prototype;
    if (w && w.tagName == "svg") {
        if (w.snap in hub) {
            return hub[w.snap];
        }
        var doc = w.ownerDocument;
        res = new Element(w);
        desc = w.getElementsByTagName("desc")[0];
        defs = w.getElementsByTagName("defs")[0];
        if (!desc) {
            desc = $("desc");
            desc.appendChild(doc.createTextNode("Created with Snap"));
            res.node.appendChild(desc);
        }
        if (!defs) {
            defs = $("defs");
            res.node.appendChild(defs);
        }
        res.defs = defs;
        for (var key in proto) if (proto[has](key)) {
            res[key] = proto[key];
        }
        res.paper = res.root = res;
    } else {
        res = make("svg", glob.doc.body);
        $(res.node, {
            height: h,
            version: 1.1,
            width: w,
            xmlns: xmlns
        });
    }
    return res;
}
function wrap(dom) {
    if (!dom) {
        return dom;
    }
    if (dom instanceof Element || dom instanceof Fragment) {
        return dom;
    }
    if (dom.tagName && dom.tagName.toLowerCase() == "svg") {
        return new Paper(dom);
    }
    if (dom.tagName && dom.tagName.toLowerCase() == "object" && dom.type == "image/svg+xml") {
        return new Paper(dom.contentDocument.getElementsByTagName("svg")[0]);
    }
    return new Element(dom);
}

Snap._.make = make;
Snap._.wrap = wrap;
/*\
 * Paper.el
 [ method ]
 **
 * Creates an element on paper with a given name and no attributes
 **
 - name (string) tag name
 - attr (object) attributes
 = (Element) the current element
 > Usage
 | var c = paper.circle(10, 10, 10); // is the same as...
 | var c = paper.el("circle").attr({
 |     cx: 10,
 |     cy: 10,
 |     r: 10
 | });
 | // and the same as
 | var c = paper.el("circle", {
 |     cx: 10,
 |     cy: 10,
 |     r: 10
 | });
\*/
Paper.prototype.el = function (name, attr) {
    var el = make(name, this.node);
    attr && el.attr(attr);
    return el;
};
/*\
 * Element.children
 [ method ]
 **
 * Returns array of all the children of the element.
 = (array) array of Elements
\*/
Element.prototype.children = function () {
    var out = [],
        ch = this.node.childNodes;
    for (var i = 0, ii = ch.length; i < ii; i++) {
        out[i] = Snap(ch[i]);
    }
    return out;
};
function jsonFiller(root, o) {
    for (var i = 0, ii = root.length; i < ii; i++) {
        var item = {
                type: root[i].type,
                attr: root[i].attr()
            },
            children = root[i].children();
        o.push(item);
        if (children.length) {
            jsonFiller(children, item.childNodes = []);
        }
    }
}
/*\
 * Element.toJSON
 [ method ]
 **
 * Returns object representation of the given element and all its children.
 = (object) in format
 o {
 o     type (string) this.type,
 o     attr (object) attributes map,
 o     childNodes (array) optional array of children in the same format
 o }
\*/
Element.prototype.toJSON = function () {
    var out = [];
    jsonFiller([this], out);
    return out[0];
};
// default
eve.on("snap.util.getattr", function () {
    var att = eve.nt();
    att = att.substring(att.lastIndexOf(".") + 1);
    var css = att.replace(/[A-Z]/g, function (letter) {
        return "-" + letter.toLowerCase();
    });
    if (cssAttr[has](css)) {
        return this.node.ownerDocument.defaultView.getComputedStyle(this.node, null).getPropertyValue(css);
    } else {
        return $(this.node, att);
    }
});
var cssAttr = {
    "alignment-baseline": 0,
    "baseline-shift": 0,
    "clip": 0,
    "clip-path": 0,
    "clip-rule": 0,
    "color": 0,
    "color-interpolation": 0,
    "color-interpolation-filters": 0,
    "color-profile": 0,
    "color-rendering": 0,
    "cursor": 0,
    "direction": 0,
    "display": 0,
    "dominant-baseline": 0,
    "enable-background": 0,
    "fill": 0,
    "fill-opacity": 0,
    "fill-rule": 0,
    "filter": 0,
    "flood-color": 0,
    "flood-opacity": 0,
    "font": 0,
    "font-family": 0,
    "font-size": 0,
    "font-size-adjust": 0,
    "font-stretch": 0,
    "font-style": 0,
    "font-variant": 0,
    "font-weight": 0,
    "glyph-orientation-horizontal": 0,
    "glyph-orientation-vertical": 0,
    "image-rendering": 0,
    "kerning": 0,
    "letter-spacing": 0,
    "lighting-color": 0,
    "marker": 0,
    "marker-end": 0,
    "marker-mid": 0,
    "marker-start": 0,
    "mask": 0,
    "opacity": 0,
    "overflow": 0,
    "pointer-events": 0,
    "shape-rendering": 0,
    "stop-color": 0,
    "stop-opacity": 0,
    "stroke": 0,
    "stroke-dasharray": 0,
    "stroke-dashoffset": 0,
    "stroke-linecap": 0,
    "stroke-linejoin": 0,
    "stroke-miterlimit": 0,
    "stroke-opacity": 0,
    "stroke-width": 0,
    "text-anchor": 0,
    "text-decoration": 0,
    "text-rendering": 0,
    "unicode-bidi": 0,
    "visibility": 0,
    "word-spacing": 0,
    "writing-mode": 0
};

eve.on("snap.util.attr", function (value) {
    var att = eve.nt(),
        attr = {};
    att = att.substring(att.lastIndexOf(".") + 1);
    attr[att] = value;
    var style = att.replace(/-(\w)/gi, function (all, letter) {
            return letter.toUpperCase();
        }),
        css = att.replace(/[A-Z]/g, function (letter) {
            return "-" + letter.toLowerCase();
        });
    if (cssAttr[has](css)) {
        this.node.style[style] = value == null ? E : value;
    } else {
        $(this.node, attr);
    }
});
(function (proto) {}(Paper.prototype));

// simple ajax
/*\
 * Snap.ajax
 [ method ]
 **
 * Simple implementation of Ajax
 **
 - url (string) URL
 - postData (object|string) data for post request
 - callback (function) callback
 - scope (object) #optional scope of callback
 * or
 - url (string) URL
 - callback (function) callback
 - scope (object) #optional scope of callback
 = (XMLHttpRequest) the XMLHttpRequest object, just in case
\*/
Snap.ajax = function (url, postData, callback, scope){
    var req = new XMLHttpRequest,
        id = ID();
    if (req) {
        if (is(postData, "function")) {
            scope = callback;
            callback = postData;
            postData = null;
        } else if (is(postData, "object")) {
            var pd = [];
            for (var key in postData) if (postData.hasOwnProperty(key)) {
                pd.push(encodeURIComponent(key) + "=" + encodeURIComponent(postData[key]));
            }
            postData = pd.join("&");
        }
        req.open((postData ? "POST" : "GET"), url, true);
        if (postData) {
            req.setRequestHeader("X-Requested-With", "XMLHttpRequest");
            req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        }
        if (callback) {
            eve.once("snap.ajax." + id + ".0", callback);
            eve.once("snap.ajax." + id + ".200", callback);
            eve.once("snap.ajax." + id + ".304", callback);
        }
        req.onreadystatechange = function() {
            if (req.readyState != 4) return;
            eve("snap.ajax." + id + "." + req.status, scope, req);
        };
        if (req.readyState == 4) {
            return req;
        }
        req.send(postData);
        return req;
    }
};
/*\
 * Snap.load
 [ method ]
 **
 * Loads external SVG file as a @Fragment (see @Snap.ajax for more advanced AJAX)
 **
 - url (string) URL
 - callback (function) callback
 - scope (object) #optional scope of callback
\*/
Snap.load = function (url, callback, scope) {
    Snap.ajax(url, function (req) {
        var f = Snap.parse(req.responseText);
        scope ? callback.call(scope, f) : callback(f);
    });
};
var getOffset = function (elem) {
    var box = elem.getBoundingClientRect(),
        doc = elem.ownerDocument,
        body = doc.body,
        docElem = doc.documentElement,
        clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
        top  = box.top  + (g.win.pageYOffset || docElem.scrollTop || body.scrollTop ) - clientTop,
        left = box.left + (g.win.pageXOffset || docElem.scrollLeft || body.scrollLeft) - clientLeft;
    return {
        y: top,
        x: left
    };
};
/*\
 * Snap.getElementByPoint
 [ method ]
 **
 * Returns you topmost element under given point.
 **
 = (object) Snap element object
 - x (number) x coordinate from the top left corner of the window
 - y (number) y coordinate from the top left corner of the window
 > Usage
 | Snap.getElementByPoint(mouseX, mouseY).attr({stroke: "#f00"});
\*/
Snap.getElementByPoint = function (x, y) {
    var paper = this,
        svg = paper.canvas,
        target = glob.doc.elementFromPoint(x, y);
    if (glob.win.opera && target.tagName == "svg") {
        var so = getOffset(target),
            sr = target.createSVGRect();
        sr.x = x - so.x;
        sr.y = y - so.y;
        sr.width = sr.height = 1;
        var hits = target.getIntersectionList(sr, null);
        if (hits.length) {
            target = hits[hits.length - 1];
        }
    }
    if (!target) {
        return null;
    }
    return wrap(target);
};
/*\
 * Snap.plugin
 [ method ]
 **
 * Let you write plugins. You pass in a function with five arguments, like this:
 | Snap.plugin(function (Snap, Element, Paper, global, Fragment) {
 |     Snap.newmethod = function () {};
 |     Element.prototype.newmethod = function () {};
 |     Paper.prototype.newmethod = function () {};
 | });
 * Inside the function you have access to all main objects (and their
 * prototypes). This allow you to extend anything you want.
 **
 - f (function) your plugin body
\*/
Snap.plugin = function (f) {
    f(Snap, Element, Paper, glob, Fragment);
};
glob.win.Snap = Snap;
return Snap;
}(window || this));
