text: // 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) || _.isString(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;
    };
  
  })();