Merge commit '41575d24bb' into webgui8. Some tests still failing.

Conflicts:
	docs/gotcha.txt
	lib/WebGUI.pm
	lib/WebGUI/Asset.pm
	lib/WebGUI/Asset/File/GalleryFile/Photo.pm
	lib/WebGUI/Asset/Post.pm
	lib/WebGUI/Asset/Template.pm
	lib/WebGUI/Asset/WikiPage.pm
	lib/WebGUI/Asset/Wobject/WikiMaster.pm
	lib/WebGUI/Cache.pm
	lib/WebGUI/Content/Setup.pm
	lib/WebGUI/Role/Asset/Subscribable.pm
	lib/WebGUI/Shop/Cart.pm
	lib/WebGUI/Shop/Pay.pm
	lib/WebGUI/Shop/PayDriver/ITransact.pm
	sbin/testEnvironment.pl
	t/Asset/WikiPage.t
	t/Shop/PayDriver.t
	t/Shop/PayDriver/ITransact.t
	t/Shop/PayDriver/Ogone.t
	t/Shop/TaxDriver/EU.t
	t/Shop/TaxDriver/Generic.t
	t/Workflow/Activity/RemoveOldCarts.t
	t/lib/WebGUI/Test.pm

www/extras/shop/cart.js

@@ -0,0 +1,486 @@
+/*global _, window, document, YAHOO */
+
+(function () {
+    function clone(o) {
+        function F() {}
+        F.prototype = o;
+        return new F();
+    }
+
+    function formatCurrency(n) {
+        return parseFloat(n.toString()).toFixed(2);
+    }
+
+    function validAddress(a) {
+        return a.label  &&
+            a.firstName &&
+            a.lastName  &&
+            a.address1  &&
+            a.city      &&
+            a.state     &&
+            a.code      &&
+            a.country;
+    }
+
+    function addressIdCounts(id) {
+        return id &&
+            id !== 'new_address' &&
+            id !== 'update_address';
+    }
+
+    function fillIn(dom, a) {
+        _.each(a, function (v, k) {
+            if (dom[k]) {
+                dom[k].value = v;
+            }
+        });
+    }
+
+    var Cart = {
+        attachAddressBlurHandlers: function (name) {
+            var fields  = _.values(this.elements[name]),
+                handler = this.createAddressBlurHandler(name);
+            this.event.on(fields, 'focusout', handler);
+        },
+
+        attachAddressSelectHandler: function (name) {
+            var e       = this.elements.dropdowns[name],
+                handler = this.createAddressFiller(name);
+
+            this.event.on(e, 'change', handler);
+        },
+
+        attachPerItemShippingChangeHandler: function (select) {
+            this.event.on(select, 'change',
+                _.bind(this.setCartItemShippingId, this, select));
+        },
+
+        // Updates the total fields based on information already contained in
+        // this.prices
+        calculateSummary: function () {
+            var e            = this.elements,
+                prices       = this.prices,
+                shipping     = prices.shipping[e.shipper.value],
+                shipPrice    = (shipping ?
+                    (shipping.hasPrice ?
+                        parseFloat(shipping.price) :
+                        0)
+                    : 0),
+                tax          = parseFloat(prices.tax),
+                subtotal     = parseFloat(prices.subtotal),
+                beforeCredit = tax + subtotal + shipPrice,
+                creditAvail  = parseFloat(e.credit.available.innerHTML),
+                creditUsed   = Math.min(beforeCredit, creditAvail),
+                afterCredit  = beforeCredit - creditUsed;
+
+            e.credit.used.innerHTML = formatCurrency(creditUsed);
+            e.total.innerHTML       = formatCurrency(afterCredit);
+        },
+
+        computePerItemShippingOptions: function () {
+            var self         = this,
+                shipping     = this.elements.dropdowns.shipping,
+                selectedMain = shipping.value,
+                validOptions = _.select(shipping.options, function (o) {
+                    var v = o.value;
+                    return addressIdCounts(v) &&
+                       v !== selectedMain;
+                });
+
+            _.each(this.getPerItemShippingDropdowns(), function (d) {
+                var selected = d.value;
+
+                _(d.options).chain().filter(function (o) {
+                    return o.value;
+                }).each(_.bind(d.removeChild, d));
+
+                _.each(validOptions, function (o) {
+                    d.appendChild(o.cloneNode(true));
+                });
+
+                // The idea here is to reselect the option that was selected,
+                // if it's still valid.  If not, we have to tell the backend
+                // as well.
+                d.value = selected;
+                if (d.value !== selected) {
+                    d.value = '';
+                    self.setCartItemShippingId(d);
+                }
+            });
+        },
+
+        connect: YAHOO.util.Connect,
+
+        copyBilling: function () {
+            var self = this,
+                e    = this.elements,
+                d    = e.dropdowns;
+            d.shipping.value = d.billing.value;
+            this.getSelectAddress(d.billing, function (address) {
+                fillIn(e.shipping, address);
+                self.computePerItemShippingOptions();
+                self.updateSummary();
+            });
+        },
+
+        create: function (args) {
+            var self = clone(this);
+            self.init(args);
+        },
+
+        createAddressBlurHandler: function (name) {
+            var self  = this,
+                other = name === 'billing' ? 'shipping' : 'billing',
+                e     = this.elements[name],
+                o     = this.elements[other],
+                c     = this.addressCache;
+
+            return function () {
+                var address = {},
+                    label   = e.label.value,
+                    copy    = o && o.label.value === label,
+                    cache   = c[label],
+                    dirty;
+
+                if (!cache) {
+                    cache = c[label] = {};
+                }
+
+                _.each(e, function (v, k) {
+                    v = v.value;
+                    address[k] = v;
+                    if (cache[k] !== v) {
+                        dirty = true;
+                        cache[k] = v;
+                    }
+                    if (copy) {
+                        o[k].value = v;
+                    }
+                });
+
+                if (dirty && validAddress(address)) {
+                    self.saveAddress(address, name);
+                }
+            };
+        },
+
+        createAddressFiller: function (name) {
+            var self   = this,
+                e      = this.elements[name],
+                select = this.elements.dropdowns[name];
+
+            return _.bind(this.getSelectAddress, this, select, function (a) {
+                fillIn(e, a);
+                if (name === 'billing' && self.sameShipping()) {
+                    self.copyBilling();
+                }
+                self.updateSummary();
+            });
+        },
+
+        dom: YAHOO.util.Dom,
+
+        formatAddress: function (a) {
+            var et  = _.template('<a href="mailto:<%= email %>"><%= email %>'),
+                csz = _.template('<%= city %>, <%= state %> <%= code %>');
+
+            return _.compact([
+                ' ',
+                [a.firstName, a.middleName, a.lastName].join(' '),
+                a.address1, a.address2, a.address3,
+                csz(a),
+                a.country,
+                a.phone,
+                a.email && et(a)
+            ]).join('<br />');
+        },
+
+        getPerItemShippingDropdowns: function () {
+            return this.dom.getElementsByClassName('itemAddressMenu', 'select');
+        },
+
+        getSelectAddress: function (select, callback) {
+            var self   = this,
+                id     = select.value,
+                label  = select.options[select.selectedIndex].text,
+                c      = this.addressCache,
+                cache  = c[label];
+
+            if (cache) {
+                callback(cache);
+            }
+            else {
+                this.request('GET', {
+                    shop      : 'address',
+                    method    : 'ajaxGetAddress',
+                    addressId : id
+                },
+                function (o) {
+                    var address = self.json.parse(o.responseText);
+                    c[address.label] = address;
+                    callback(address);
+                });
+            }
+        },
+
+        event: YAHOO.util.Event,
+
+        init: function (args) {
+            // this.elements is our cache of dom objects.  We're passed in an
+            // object with ids, and we want to replace those ids with actual
+            // dom references.
+            function getElements(o) {
+                _.each(o, function (v, k) {
+                    if (typeof v === 'object') {
+                        getElements(v);
+                    }
+                    else {
+                        o[k] = document.getElementById(v);
+                    }
+                });
+            }
+
+            var self   = this,
+                e      = args.elements,
+                f      = document.forms[0],
+                checks = f.sameShippingAsBilling,
+                sameChange;
+
+            getElements(e);
+            this.elements = e;
+
+            this.prices       = null;
+            this.addressCache = {};
+            this.baseUrl      = args.baseUrl;
+            this.attachAddressBlurHandlers('billing');
+            this.attachAddressSelectHandler('billing');
+
+            // if checks is false, we don't have the shipping address form on
+            // this page (because none of the items in the cart require
+            // shipping)
+            if (checks) {
+                e.same = checks[0];
+                sameChange = _.bind(this.useSameShippingAddressChange, this);
+                this.event.on(checks, 'change', sameChange);
+                sameChange();
+                this.attachAddressBlurHandlers('shipping');
+                this.attachAddressSelectHandler('shipping');
+                _.each(
+                    this.getPerItemShippingDropdowns(),
+                    _.bind(self.attachPerItemShippingChangeHandler, self)
+                );
+                this.event.on(e.dropdowns.shipping, 'change', function () {
+                    self.computePerItemShippingOptions();
+                });
+                self.computePerItemShippingOptions();
+            }
+            else {
+                delete e.shipping;
+            }
+
+            this.event.on(e.shipper, 'change',
+                this.calculateSummary, null, this);
+
+            this.updateSummary();
+        },
+
+        json: YAHOO.lang.JSON,
+
+        saveAddress: function (address, name) {
+            var self = this,
+                label = address.label;
+
+            this.request('POST', {
+                shop    : 'address',
+                method  : 'ajaxSave',
+                address : this.json.stringify(address)
+            },
+            function (o) {
+                var id = o.responseText,
+                     d = self.elements.dropdowns;
+
+                function updateOne(dropdown) {
+                    var opt = _.detect(dropdown.options, function (o) {
+                        return o.text === label;
+                    });
+
+                    if (!opt) {
+                        opt = document.createElement('option');
+                        opt.text  = label;
+                        dropdown.appendChild(opt);
+                    }
+
+                    opt.value = id;
+                }
+
+                updateOne(d.billing);
+                updateOne(d.shipping);
+                d[name].value = id;
+                if (name === 'billing' && self.sameShipping()) {
+                    self.copyBilling();
+                }
+                else {
+                    self.computePerItemShippingOptions();
+                }
+                self.updateSummary();
+            });
+        },
+
+        // Like calling calculateSummary, except that it will first fetch
+        // price information from the server.  This should be called when the
+        // address information has changed, and at least once on page load (so
+        // we have an initial this.prices to work with)
+        updateSummary: function () {
+            var self     = this,
+                e        = this.elements,
+                tax      = e.tax,
+                shipper  = e.shipper,
+                selected = shipper.value,
+                d        = e.dropdowns,
+                shipping = d.shipping.value,
+                billing  = d.billing.value,
+                params   = {
+                    shop: 'cart',
+                    method: 'ajaxPrices'
+                };
+
+            if (addressIdCounts(billing)) {
+                params.billingId = billing;
+            }
+
+            if (this.sameShipping()) {
+                params.shippingId = params.billingId;
+            } else if (addressIdCounts(shipping)) {
+                params.shippingId = shipping;
+            }
+
+            this.request('GET', params, function (o) {
+                var response = self.json.parse(o.responseText);
+
+                if (response.error) {
+                    return;
+                }
+
+                self.prices   = response;
+                tax.innerHTML = formatCurrency(response.tax);
+
+                _(shipper.options).chain().select(function (o) {
+                    return o.value;
+                }).each(function (o) {
+                    o.parentNode.removeChild(o);
+                });
+
+                _.each(response.shipping, function (o, id) {
+                    var opt   = document.createElement('option'),
+                        label = o.label;
+
+                    if (o.hasPrice) {
+                        label += ' (' + formatCurrency(o.price) + ')';
+                    }
+
+                    opt.innerHTML = label;
+                    opt.value     = id;
+                    shipper.appendChild(opt);
+                });
+
+                shipper.value = selected;
+                self.calculateSummary();
+            });
+        },
+
+        // This is a very thin layer on top of YAHOO.util.Connect.asyncRequest.
+        request: function (method, params, success) {
+            var url   = this.baseUrl,
+                cb    = { success: success },
+                query = _(params).map(function (v, k) {
+                    return [k, v].join('=');
+                }).join('&');
+
+            if (method === 'GET') {
+                this.connect.asyncRequest(method, url + '?' + query, cb);
+            }
+            else {
+                this.connect.asyncRequest(method, url, cb, query);
+            }
+        },
+
+        sameShipping: function () {
+            return this.elements.same.checked;
+        },
+
+        setCartItemShippingId: function (select) {
+            var self = this, parent = select.parentNode;
+
+            function setText(t) {
+                parent.innerHTML = t;
+                parent.insertBefore(select, parent.firstChild);
+            }
+
+            this.request('POST', {
+                shop      : 'cart',
+                method    : 'ajaxSetCartItemShippingId',
+                itemId    : select.id.match(/itemAddress_(.*)_formId/)[1],
+                addressId : select.value
+            }, function () {
+                self.updateSummary();
+                if (select.value) {
+                    self.getSelectAddress(select, function (address) {
+                        setText(self.formatAddress(address));
+                    });
+                }
+                else {
+                    setText('');
+                }
+            });
+        },
+
+        useSameShippingAddressChange: function () {
+            var e       = this.elements,
+                disable = this.sameShipping(),
+                drops   = e.dropdowns;
+
+            _.each(e.shipping, function (v, k) {
+                v.disabled = disable;
+            });
+            drops.shipping.disabled = disable;
+            if (disable && addressIdCounts(drops.billing.value)) {
+                this.copyBilling();
+            }
+        }
+    },
+        addressParts = [
+            'label', 'firstName', 'lastName', 'organization',
+            'address1', 'address2', 'address3', 'city', 'state',
+            'code', 'country', 'phoneNumber', 'email'
+        ],
+        elements = {
+            shipper   : 'shipperId_formId',
+            tax       : 'taxWrap',
+            total     : 'totalPriceWrap',
+            credit    : {
+                available : 'inShopCreditAvailableWrap',
+                used      : 'inShopCreditDeductionWrap'
+            },
+            dropdowns : {
+                billing : 'billingAddressId_formId',
+                shipping: 'shippingAddressId_formId'
+            }
+        };
+
+    function addAddressKind(name) {
+        var obj = elements[name] = {};
+        _.each(addressParts, function (key) {
+            obj[key] = name + '_' + key + '_formId';
+        });
+    }
+
+    addAddressKind('billing');
+    addAddressKind('shipping');
+
+    Cart.event.onDOMReady(function () {
+        Cart.create({
+            baseUrl  : window.location.pathname,
+            elements : elements
+        });
+    });
+}());

www/extras/underscore/underscore-min.js

@@ -0,0 +1,17 @@
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+d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
+if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a))return a.length===
+0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return a&&a.callee};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||D.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&
+a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){F(c,b[c]=a[c])})};
+var G=0;b.uniqueId=function(a){var c=G++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+
+"');}return p.join('');");return c?a(c):a};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},F=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);C.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];
+k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();

www/extras/underscore/underscore.js

@@ -0,0 +1,694 @@
+// Underscore.js
+// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the terms of the MIT license.
+// Portions of Underscore are inspired by or borrowed from Prototype.js,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+
+(function() {
+  // ------------------------- Baseline setup ---------------------------------
+
+  // Establish the root object, "window" in the browser, or "global" on the server.
+  var root = this;
+
+  // Save the previous value of the "_" variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets thrown to break out of a loop iteration.
+  var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
+
+  // Quick regexp-escaping function, because JS doesn't have RegExp.escape().
+  var escapeRegExp = function(s) { return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1'); };
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var slice                 = ArrayProto.slice,
+      unshift               = ArrayProto.unshift,
+      toString              = ObjProto.toString,
+      hasOwnProperty        = ObjProto.hasOwnProperty,
+      propertyIsEnumerable  = ObjProto.propertyIsEnumerable;
+
+  // All ECMA5 native implementations we hope to use are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) { return new wrapper(obj); };
+
+  // Export the Underscore object for CommonJS.
+  if (typeof exports !== 'undefined') exports._ = _;
+
+  // Export underscore to global scope.
+  root._ = _;
+
+  // Current version.
+  _.VERSION = '1.0.2';
+
+  // ------------------------ Collection Functions: ---------------------------
+
+  // The cornerstone, an each implementation.
+  // Handles objects implementing forEach, arrays, and raw objects.
+  // Delegates to JavaScript 1.6's native forEach if available.
+  var each = _.forEach = function(obj, iterator, context) {
+    try {
+      if (nativeForEach && obj.forEach === nativeForEach) {
+        obj.forEach(iterator, context);
+      } else if (_.isNumber(obj.length)) {
+        for (var i = 0, l = obj.length; i < l; i++) iterator.call(context, obj[i], i, obj);
+      } else {
+        for (var key in obj) {
+          if (hasOwnProperty.call(obj, key)) iterator.call(context, obj[key], key, obj);
+        }
+      }
+    } catch(e) {
+      if (e != breaker) throw e;
+    }
+    return obj;
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to JavaScript 1.6's native map if available.
+  _.map = function(obj, iterator, context) {
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    var results = [];
+    each(obj, function(value, index, list) {
+      results.push(iterator.call(context, value, index, list));
+    });
+    return results;
+  };
+
+  // Reduce builds up a single result from a list of values, aka inject, or foldl.
+  // Delegates to JavaScript 1.8's native reduce if available.
+  _.reduce = function(obj, memo, iterator, context) {
+    if (nativeReduce && obj.reduce === nativeReduce) return obj.reduce(_.bind(iterator, context), memo);
+    each(obj, function(value, index, list) {
+      memo = iterator.call(context, memo, value, index, list);
+    });
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as foldr. Uses
+  // Delegates to JavaScript 1.8's native reduceRight if available.
+  _.reduceRight = function(obj, memo, iterator, context) {
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    var reversed = _.clone(_.toArray(obj)).reverse();
+    return _.reduce(reversed, memo, iterator, context);
+  };
+
+  // Return the first value which passes a truth test.
+  _.detect = function(obj, iterator, context) {
+    var result;
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        _.breakLoop();
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to JavaScript 1.6's native filter if available.
+  _.filter = function(obj, iterator, context) {
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    var results = [];
+    each(obj, function(value, index, list) {
+      iterator.call(context, value, index, list) && results.push(value);
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    var results = [];
+    each(obj, function(value, index, list) {
+      !iterator.call(context, value, index, list) && results.push(value);
+    });
+    return results;
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to JavaScript 1.6's native every if available.
+  _.every = function(obj, iterator, context) {
+    iterator = iterator || _.identity;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    var result = true;
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
+    });
+    return result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to JavaScript 1.6's native some if available.
+  _.some = function(obj, iterator, context) {
+    iterator = iterator || _.identity;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    var result = false;
+    each(obj, function(value, index, list) {
+      if (result = iterator.call(context, value, index, list)) _.breakLoop();
+    });
+    return result;
+  };
+
+  // Determine if a given value is included in the array or object using '==='.
+  _.include = function(obj, target) {
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    var found = false;
+    each(obj, function(value) {
+      if (found = value === target) _.breakLoop();
+    });
+    return found;
+  };
+
+  // Invoke a method with arguments on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = _.rest(arguments, 2);
+    return _.map(obj, function(value) {
+      return (method ? value[method] : value).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of map: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Return the maximum item or (item-based computation).
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    var result = {computed : -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    var result = {computed : Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, iterator, context) {
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }), 'value');
+  };
+
+  // Use a comparator function to figure out at what index an object should
+  // be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator) {
+    iterator = iterator || _.identity;
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >> 1;
+      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Convert anything iterable into a real, live array.
+  _.toArray = function(iterable) {
+    if (!iterable)                return [];
+    if (iterable.toArray)         return iterable.toArray();
+    if (_.isArray(iterable))      return iterable;
+    if (_.isArguments(iterable))  return slice.call(iterable);
+    return _.values(iterable);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    return _.toArray(obj).length;
+  };
+
+  // -------------------------- Array Functions: ------------------------------
+
+  // Get the first element of an array. Passing "n" will return the first N
+  // values in the array. Aliased as "head". The "guard" check allows it to work
+  // with _.map.
+  _.first = function(array, n, guard) {
+    return n && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the first entry of the array. Aliased as "tail".
+  // Especially useful on the arguments object. Passing an "index" will return
+  // the rest of the values in the array from that index onward. The "guard"
+   //check allows it to work with _.map.
+  _.rest = function(array, index, guard) {
+    return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
+  };
+
+  // Get the last element of an array.
+  _.last = function(array) {
+    return array[array.length - 1];
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, function(value){ return !!value; });
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array) {
+    return _.reduce(array, [], function(memo, value) {
+      if (_.isArray(value)) return memo.concat(_.flatten(value));
+      memo.push(value);
+      return memo;
+    });
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    var values = _.rest(arguments);
+    return _.filter(array, function(value){ return !_.include(values, value); });
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  _.uniq = function(array, isSorted) {
+    return _.reduce(array, [], function(memo, el, i) {
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
+      return memo;
+    });
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersect = function(array) {
+    var rest = _.rest(arguments);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = _.toArray(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, String(i));
+    return results;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  // we need this function. Return the position of the first occurence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to JavaScript 1.8's native indexOf if available.
+  _.indexOf = function(array, item) {
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
+    for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+
+  // Delegates to JavaScript 1.6's native lastIndexOf if available.
+  _.lastIndexOf = function(array, item) {
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
+    var i = array.length;
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python range() function. See:
+  // http://docs.python.org/library/functions.html#range
+  _.range = function(start, stop, step) {
+    var a     = _.toArray(arguments);
+    var solo  = a.length <= 1;
+    var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
+    var len   = Math.ceil((stop - start) / step);
+    if (len <= 0) return [];
+    var range = new Array(len);
+    for (var i = start, idx = 0; true; i += step) {
+      if ((step > 0 ? i - stop : stop - i) >= 0) return range;
+      range[idx++] = i;
+    }
+  };
+
+  // ----------------------- Function Functions: ------------------------------
+
+  // Create a function bound to a given object (assigning 'this', and arguments,
+  // optionally). Binding with arguments is also known as 'curry'.
+  _.bind = function(func, obj) {
+    var args = _.rest(arguments, 2);
+    return function() {
+      return func.apply(obj || {}, args.concat(_.toArray(arguments)));
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = _.rest(arguments);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = _.rest(arguments, 2);
+    return setTimeout(function(){ return func.apply(func, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(_.rest(arguments)));
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func].concat(_.toArray(arguments));
+      return wrapper.apply(wrapper, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = _.toArray(arguments);
+    return function() {
+      var args = _.toArray(arguments);
+      for (var i=funcs.length-1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // ------------------------- Object Functions: ------------------------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to ECMA5's native Object.keys
+  _.keys = nativeKeys || function(obj) {
+    if (_.isArray(obj)) return _.range(0, obj.length);
+    var keys = [];
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    return _.map(obj, _.identity);
+  };
+
+  // Return a sorted list of the function names available on the object.
+  _.functions = function(obj) {
+    return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(_.rest(arguments), function(source) {
+      for (var prop in source) obj[prop] = source[prop];
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (_.isArray(obj)) return obj.slice(0);
+    return _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    // Check object identity.
+    if (a === b) return true;
+    // Different types?
+    var atype = typeof(a), btype = typeof(b);
+    if (atype != btype) return false;
+    // Basic equality test (watch out for coercions).
+    if (a == b) return true;
+    // One is falsy and the other truthy.
+    if ((!a && b) || (a && !b)) return false;
+    // One of them implements an isEqual()?
+    if (a.isEqual) return a.isEqual(b);
+    // Check dates' integer values.
+    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
+    // Both are NaN?
+    if (_.isNaN(a) && _.isNaN(b)) return true;
+    // Compare regular expressions.
+    if (_.isRegExp(a) && _.isRegExp(b))
+      return a.source     === b.source &&
+             a.global     === b.global &&
+             a.ignoreCase === b.ignoreCase &&
+             a.multiline  === b.multiline;
+    // If a is not an object by this point, we can't handle it.
+    if (atype !== 'object') return false;
+    // Check for different array lengths before comparing contents.
+    if (a.length && (a.length !== b.length)) return false;
+    // Nothing else worked, deep compare the contents.
+    var aKeys = _.keys(a), bKeys = _.keys(b);
+    // Different object sizes?
+    if (aKeys.length != bKeys.length) return false;
+    // Recursive comparison of contents.
+    for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
+    return true;
+  };
+
+  // Is a given array or object empty?
+  _.isEmpty = function(obj) {
+    if (_.isArray(obj)) return obj.length === 0;
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType == 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return !!(obj && obj.concat && obj.unshift && !obj.callee);
+  };
+
+  // Is a given variable an arguments object?
+  _.isArguments = function(obj) {
+    return obj && obj.callee;
+  };
+
+  // Is a given value a function?
+  _.isFunction = function(obj) {
+    return !!(obj && obj.constructor && obj.call && obj.apply);
+  };
+
+  // Is a given value a string?
+  _.isString = function(obj) {
+    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
+  };
+
+  // Is a given value a number?
+  _.isNumber = function(obj) {
+    return (obj === +obj) || (toString.call(obj) === '[object Number]');
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false;
+  };
+
+  // Is a given value a date?
+  _.isDate = function(obj) {
+    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
+  };
+
+  // Is the given value a regular expression?
+  _.isRegExp = function(obj) {
+    return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
+  };
+
+  // Is the given value NaN -- this one is interesting. NaN != NaN, and
+  // isNaN(undefined) == true, so we make sure it's a number first.
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && isNaN(obj);
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return typeof obj == 'undefined';
+  };
+
+  // -------------------------- Utility Functions: ----------------------------
+
+  // Run Underscore.js in noConflict mode, returning the '_' variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function n times.
+  _.times = function (n, iterator, context) {
+    for (var i = 0; i < n; i++) iterator.call(context, i);
+  };
+
+  // Break out of the middle of an iteration.
+  _.breakLoop = function() {
+    throw breaker;
+  };
+
+  // Add your own custom functions to the Underscore object, ensuring that
+  // they're correctly added to the OOP wrapper as well.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      addToWrapper(name, _[name] = obj[name]);
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = idCounter++;
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    start       : '<%',
+    end         : '%>',
+    interpolate : /<%=(.+?)%>/g
+  };
+
+  // JavaScript templating a-la ERB, pilfered from John Resig's
+  // "Secrets of the JavaScript Ninja", page 83.
+  // Single-quote fix from Rick Strahl's version.
+  // With alterations for arbitrary delimiters.
+  _.template = function(str, data) {
+    var c  = _.templateSettings;
+    var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
+    var fn = new Function('obj',
+      'var p=[],print=function(){p.push.apply(p,arguments);};' +
+      'with(obj){p.push(\'' +
+      str.replace(/[\r\t\n]/g, " ")
+         .replace(endMatch,"\t")
+         .split("'").join("\\'")
+         .split("\t").join("'")
+         .replace(c.interpolate, "',$1,'")
+         .split(c.start).join("');")
+         .split(c.end).join("p.push('")
+         + "');}return p.join('');");
+    return data ? fn(data) : fn;
+  };
+
+  // ------------------------------- Aliases ----------------------------------
+
+  _.each     = _.forEach;
+  _.foldl    = _.inject       = _.reduce;
+  _.foldr    = _.reduceRight;
+  _.select   = _.filter;
+  _.all      = _.every;
+  _.any      = _.some;
+  _.head     = _.first;
+  _.tail     = _.rest;
+  _.methods  = _.functions;
+
+  // ------------------------ Setup the OOP Wrapper: --------------------------
+
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj, chain) {
+    return chain ? _(obj).chain() : obj;
+  };
+
+  // A method to easily add functions to the OOP wrapper.
+  var addToWrapper = function(name, func) {
+    wrapper.prototype[name] = function() {
+      var args = _.toArray(arguments);
+      unshift.call(args, this._wrapped);
+      return result(func.apply(_, args), this._chain);
+    };
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      method.apply(this._wrapped, arguments);
+      return result(this._wrapped, this._chain);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      return result(method.apply(this._wrapped, arguments), this._chain);
+    };
+  });
+
+  // Start chaining a wrapped Underscore object.
+  wrapper.prototype.chain = function() {
+    this._chain = true;
+    return this;
+  };
+
+  // Extracts the result from a wrapped and chained object.
+  wrapper.prototype.value = function() {
+    return this._wrapped;
+  };
+
+})();