text: /*! shepherd 0.3.1 */
  /*! tether 0.4.8 */
  (function() {
    var Evented, addClass, defer, deferred, extend, flush, getBounds, getOffsetParent, getOrigin, getScrollParent, hasClass, node, removeClass, uniqueId, updateClasses, zeroPosCache,
      __hasProp = {}.hasOwnProperty,
      __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
      __slice = [].slice;
  
    if (window.Tether == null) {
      window.Tether = {};
    }
  
    getScrollParent = function(el) {
      var parent, position, scrollParent, style, _ref;
      position = getComputedStyle(el).position;
      if (position === 'fixed') {
        return el;
      }
      scrollParent = void 0;
      parent = el;
      while (parent = parent.parentNode) {
        try {
          style = getComputedStyle(parent);
        } catch (_error) {}
        if (style == null) {
          return parent;
        }
        if (/(auto|scroll)/.test(style['overflow'] + style['overflow-y'] + style['overflow-x'])) {
          if (position !== 'absolute' || ((_ref = style['position']) === 'relative' || _ref === 'absolute' || _ref === 'fixed')) {
            return parent;
          }
        }
      }
      return document.body;
    };
  
    uniqueId = (function() {
      var id;
      id = 0;
      return function() {
        return id++;
      };
    })();
  
    zeroPosCache = {};
  
    getOrigin = function(doc) {
      var id, k, node, v, _ref;
      node = doc._tetherZeroElement;
      if (node == null) {
        node = doc.createElement('div');
        node.setAttribute('data-tether-id', uniqueId());
        extend(node.style, {
          top: 0,
          left: 0,
          position: 'absolute'
        });
        doc.body.appendChild(node);
        doc._tetherZeroElement = node;
      }
      id = node.getAttribute('data-tether-id');
      if (zeroPosCache[id] == null) {
        zeroPosCache[id] = {};
        _ref = node.getBoundingClientRect();
        for (k in _ref) {
          v = _ref[k];
          zeroPosCache[id][k] = v;
        }
        defer(function() {
          return zeroPosCache[id] = void 0;
        });
      }
      return zeroPosCache[id];
    };
  
    node = null;
  
    getBounds = function(el) {
      var box, doc, docEl, k, origin, v, _ref;
      if (el === document) {
        doc = document;
        el = document.documentElement;
      } else {
        doc = el.ownerDocument;
      }
      docEl = doc.documentElement;
      box = {};
      _ref = el.getBoundingClientRect();
      for (k in _ref) {
        v = _ref[k];
        box[k] = v;
      }
      origin = getOrigin(doc);
      box.top -= origin.top;
      box.left -= origin.left;
      box.top = box.top - docEl.clientTop;
      box.left = box.left - docEl.clientLeft;
      box.right = doc.body.clientWidth - box.width - box.left;
      box.bottom = doc.body.clientHeight - box.height - box.top;
      return box;
    };
  
    getOffsetParent = function(el) {
      return el.offsetParent || document.documentElement;
    };
  
    extend = function(out) {
      var args, key, obj, val, _i, _len, _ref;
      if (out == null) {
        out = {};
      }
      args = [];
      Array.prototype.push.apply(args, arguments);
      _ref = args.slice(1);
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        obj = _ref[_i];
        if (obj) {
          for (key in obj) {
            if (!__hasProp.call(obj, key)) continue;
            val = obj[key];
            out[key] = val;
          }
        }
      }
      return out;
    };
  
    removeClass = function(el, name) {
      var cls, _i, _len, _ref, _results;
      if (el.classList != null) {
        _ref = name.split(' ');
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          cls = _ref[_i];
          _results.push(el.classList.remove(cls));
        }
        return _results;
      } else {
        return el.className = el.className.replace(new RegExp("(^| )" + (name.split(' ').join('|')) + "( |$)", 'gi'), ' ');
      }
    };
  
    addClass = function(el, name) {
      var cls, _i, _len, _ref, _results;
      if (el.classList != null) {
        _ref = name.split(' ');
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          cls = _ref[_i];
          _results.push(el.classList.add(cls));
        }
        return _results;
      } else {
        removeClass(el, name);
        return el.className += " " + name;
      }
    };
  
    hasClass = function(el, name) {
      if (el.classList != null) {
        return el.classList.contains(name);
      } else {
        return new RegExp("(^| )" + name + "( |$)", 'gi').test(el.className);
      }
    };
  
    updateClasses = function(el, add, all) {
      var cls, _i, _j, _len, _len1, _results;
      for (_i = 0, _len = all.length; _i < _len; _i++) {
        cls = all[_i];
        if (__indexOf.call(add, cls) < 0) {
          if (hasClass(el, cls)) {
            removeClass(el, cls);
          }
        }
      }
      _results = [];
      for (_j = 0, _len1 = add.length; _j < _len1; _j++) {
        cls = add[_j];
        if (!hasClass(el, cls)) {
          _results.push(addClass(el, cls));
        } else {
          _results.push(void 0);
        }
      }
      return _results;
    };
  
    deferred = [];
  
    defer = function(fn) {
      return deferred.push(fn);
    };
  
    flush = function() {
      var fn, _results;
      _results = [];
      while (fn = deferred.pop()) {
        _results.push(fn());
      }
      return _results;
    };
  
    Evented = (function() {
      function Evented() {}
  
      Evented.prototype.on = function(event, handler, ctx, once) {
        var _base;
        if (once == null) {
          once = false;
        }
        if (this.bindings == null) {
          this.bindings = {};
        }
        if ((_base = this.bindings)[event] == null) {
          _base[event] = [];
        }
        return this.bindings[event].push({
          handler: handler,
          ctx: ctx,
          once: once
        });
      };
  
      Evented.prototype.once = function(event, handler, ctx) {
        return this.on(event, handler, ctx, true);
      };
  
      Evented.prototype.off = function(event, handler) {
        var i, _ref, _results;
        if (((_ref = this.bindings) != null ? _ref[event] : void 0) == null) {
          return;
        }
        if (handler == null) {
          return delete this.bindings[event];
        } else {
          i = 0;
          _results = [];
          while (i < this.bindings[event].length) {
            if (this.bindings[event][i].handler === handler) {
              _results.push(this.bindings[event].splice(i, 1));
            } else {
              _results.push(i++);
            }
          }
          return _results;
        }
      };
  
      Evented.prototype.trigger = function() {
        var args, ctx, event, handler, i, once, _ref, _ref1, _results;
        event = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
        if ((_ref = this.bindings) != null ? _ref[event] : void 0) {
          i = 0;
          _results = [];
          while (i < this.bindings[event].length) {
            _ref1 = this.bindings[event][i], handler = _ref1.handler, ctx = _ref1.ctx, once = _ref1.once;
            handler.apply(ctx != null ? ctx : this, args);
            if (once) {
              _results.push(this.bindings[event].splice(i, 1));
            } else {
              _results.push(i++);
            }
          }
          return _results;
        }
      };
  
      return Evented;
  
    })();
  
    Tether.Utils = {
      getScrollParent: getScrollParent,
      getBounds: getBounds,
      getOffsetParent: getOffsetParent,
      extend: extend,
      addClass: addClass,
      removeClass: removeClass,
      hasClass: hasClass,
      updateClasses: updateClasses,
      defer: defer,
      flush: flush,
      uniqueId: uniqueId,
      Evented: Evented
    };
  
  }).call(this);
  
  (function() {
    var MIRROR_LR, MIRROR_TB, OFFSET_MAP, addClass, addOffset, attachmentToOffset, autoToFixedAttachment, defer, extend, flush, getBounds, getOffsetParent, getOuterSize, getScrollParent, getSize, now, offsetToPx, parseAttachment, parseOffset, position, removeClass, tethers, transformKey, updateClasses, within, _Tether, _ref,
      __slice = [].slice,
      __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
  
    if (typeof Tether === "undefined" || Tether === null) {
      throw new Error("You must include the utils.js file before tether.js");
    }
  
    _ref = Tether.Utils, getScrollParent = _ref.getScrollParent, getSize = _ref.getSize, getOuterSize = _ref.getOuterSize, getBounds = _ref.getBounds, getOffsetParent = _ref.getOffsetParent, extend = _ref.extend, addClass = _ref.addClass, removeClass = _ref.removeClass, updateClasses = _ref.updateClasses, defer = _ref.defer, flush = _ref.flush;
  
    within = function(a, b, diff) {
      if (diff == null) {
        diff = 1;
      }
      return (a + diff >= b && b >= a - diff);
    };
  
    transformKey = (function() {
      var el, key, _i, _len, _ref1;
      el = document.createElement('div');
      _ref1 = ['transform', 'webkitTransform', 'OTransform', 'MozTransform', 'msTransform'];
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        key = _ref1[_i];
        if (el.style[key] !== void 0) {
          return key;
        }
      }
    })();
  
    tethers = [];
  
    position = function() {
      var tether, _i, _len;
      for (_i = 0, _len = tethers.length; _i < _len; _i++) {
        tether = tethers[_i];
        tether.position(false);
      }
      return flush();
    };
  
    now = function() {
      var _ref1;
      return (_ref1 = typeof performance !== "undefined" && performance !== null ? typeof performance.now === "function" ? performance.now() : void 0 : void 0) != null ? _ref1 : +(new Date);
    };
  
    (function() {
      var event, lastCall, lastDuration, pendingTimeout, tick, _i, _len, _ref1, _results;
      lastCall = null;
      lastDuration = null;
      pendingTimeout = null;
      tick = function() {
        if ((lastDuration != null) && lastDuration > 16) {
          lastDuration = Math.min(lastDuration - 16, 250);
          pendingTimeout = setTimeout(tick, 250);
          return;
        }
        if ((lastCall != null) && (now() - lastCall) < 10) {
          return;
        }
        if (pendingTimeout != null) {
          clearTimeout(pendingTimeout);
          pendingTimeout = null;
        }
        lastCall = now();
        position();
        return lastDuration = now() - lastCall;
      };
      _ref1 = ['resize', 'scroll'];
      _results = [];
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        event = _ref1[_i];
        _results.push(window.addEventListener(event, tick));
      }
      return _results;
    })();
  
    MIRROR_LR = {
      center: 'center',
      left: 'right',
      right: 'left'
    };
  
    MIRROR_TB = {
      middle: 'middle',
      top: 'bottom',
      bottom: 'top'
    };
  
    OFFSET_MAP = {
      top: 0,
      left: 0,
      middle: '50%',
      center: '50%',
      bottom: '100%',
      right: '100%'
    };
  
    autoToFixedAttachment = function(attachment, relativeToAttachment) {
      var left, top;
      left = attachment.left, top = attachment.top;
      if (left === 'auto') {
        left = MIRROR_LR[relativeToAttachment.left];
      }
      if (top === 'auto') {
        top = MIRROR_TB[relativeToAttachment.top];
      }
      return {
        left: left,
        top: top
      };
    };
  
    attachmentToOffset = function(attachment) {
      var _ref1, _ref2;
      return {
        left: (_ref1 = OFFSET_MAP[attachment.left]) != null ? _ref1 : attachment.left,
        top: (_ref2 = OFFSET_MAP[attachment.top]) != null ? _ref2 : attachment.top
      };
    };
  
    addOffset = function() {
      var left, offsets, out, top, _i, _len, _ref1;
      offsets = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      out = {
        top: 0,
        left: 0
      };
      for (_i = 0, _len = offsets.length; _i < _len; _i++) {
        _ref1 = offsets[_i], top = _ref1.top, left = _ref1.left;
        if (typeof top === 'string') {
          top = parseFloat(top, 10);
        }
        if (typeof left === 'string') {
          left = parseFloat(left, 10);
        }
        out.top += top;
        out.left += left;
      }
      return out;
    };
  
    offsetToPx = function(offset, size) {
      if (typeof offset.left === 'string' && offset.left.indexOf('%') !== -1) {
        offset.left = parseFloat(offset.left, 10) / 100 * size.width;
      }
      if (typeof offset.top === 'string' && offset.top.indexOf('%') !== -1) {
        offset.top = parseFloat(offset.top, 10) / 100 * size.height;
      }
      return offset;
    };
  
    parseAttachment = parseOffset = function(value) {
      var left, top, _ref1;
      _ref1 = value.split(' '), top = _ref1[0], left = _ref1[1];
      return {
        top: top,
        left: left
      };
    };
  
    _Tether = (function() {
      _Tether.modules = [];
  
      function _Tether(options) {
        this.position = __bind(this.position, this);
        var module, _i, _len, _ref1, _ref2;
        tethers.push(this);
        this.history = [];
        this.setOptions(options, false);
        _ref1 = Tether.modules;
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          module = _ref1[_i];
          if ((_ref2 = module.initialize) != null) {
            _ref2.call(this);
          }
        }
        this.position();
      }
  
      _Tether.prototype.getClass = function(key) {
        var _ref1, _ref2;
        if ((_ref1 = this.options.classes) != null ? _ref1[key] : void 0) {
          return this.options.classes[key];
        } else if (((_ref2 = this.options.classes) != null ? _ref2[key] : void 0) !== false) {
          if (this.options.classPrefix) {
            return "" + this.options.classPrefix + "-" + key;
          } else {
            return key;
          }
        } else {
          return '';
        }
      };
  
      _Tether.prototype.setOptions = function(options, position) {
        var defaults, key, _i, _len, _ref1, _ref2;
        this.options = options;
        if (position == null) {
          position = true;
        }
        defaults = {
          offset: '0 0',
          targetOffset: '0 0',
          targetAttachment: 'auto auto',
          classPrefix: 'tether'
        };
        this.options = extend(defaults, this.options);
        _ref1 = this.options, this.element = _ref1.element, this.target = _ref1.target, this.targetModifier = _ref1.targetModifier;
        if (this.target === 'viewport') {
          this.target = document.body;
          this.targetModifier = 'visible';
        } else if (this.target === 'scroll-handle') {
          this.target = document.body;
          this.targetModifier = 'scroll-handle';
        }
        _ref2 = ['element', 'target'];
        for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
          key = _ref2[_i];
          if (this[key] == null) {
            throw new Error("Tether Error: Both element and target must be defined");
          }
          if (this[key].jquery != null) {
            this[key] = this[key][0];
          } else if (typeof this[key] === 'string') {
            this[key] = document.querySelector(this[key]);
          }
        }
        addClass(this.element, this.getClass('element'));
        addClass(this.target, this.getClass('target'));
        if (!this.options.attachment) {
          throw new Error("Tether Error: You must provide an attachment");
        }
        this.targetAttachment = parseAttachment(this.options.targetAttachment);
        this.attachment = parseAttachment(this.options.attachment);
        this.offset = parseOffset(this.options.offset);
        this.targetOffset = parseOffset(this.options.targetOffset);
        if (this.scrollParent != null) {
          this.disable();
        }
        if (this.targetModifier === 'scroll-handle') {
          this.scrollParent = this.target;
        } else {
          this.scrollParent = getScrollParent(this.target);
        }
        if (this.options.enabled !== false) {
          return this.enable(position);
        }
      };
  
      _Tether.prototype.getTargetBounds = function() {
        var bounds, fitAdj, hasBottomScroll, height, out, scrollBottom, scrollPercentage, style, target;
        if (this.targetModifier != null) {
          switch (this.targetModifier) {
            case 'visible':
              if (this.target === document.body) {
                return {
                  top: pageYOffset,
                  left: pageXOffset,
                  height: innerHeight,
                  width: innerWidth
                };
              } else {
                bounds = getBounds(this.target);
                out = {
                  height: bounds.height,
                  width: bounds.width,
                  top: bounds.top,
                  left: bounds.left
                };
                out.height = Math.min(out.height, bounds.height - (pageYOffset - bounds.top));
                out.height = Math.min(out.height, bounds.height - ((bounds.top + bounds.height) - (pageYOffset + innerHeight)));
                out.height = Math.min(innerHeight, out.height);
                out.height -= 2;
                out.width = Math.min(out.width, bounds.width - (pageXOffset - bounds.left));
                out.width = Math.min(out.width, bounds.width - ((bounds.left + bounds.width) - (pageXOffset + innerWidth)));
                out.width = Math.min(innerWidth, out.width);
                out.width -= 2;
                if (out.top < pageYOffset) {
                  out.top = pageYOffset;
                }
                if (out.left < pageXOffset) {
                  out.left = pageXOffset;
                }
                return out;
              }
              break;
            case 'scroll-handle':
              target = this.target;
              if (target === document.body) {
                target = document.documentElement;
                bounds = {
                  left: pageXOffset,
                  top: pageYOffset,
                  height: innerHeight,
                  width: innerWidth
                };
              } else {
                bounds = getBounds(target);
              }
              style = getComputedStyle(target);
              hasBottomScroll = target.scrollWidth > target.clientWidth || 'scroll' === [style.overflow, style.overflowX] || this.target !== document.body;
              scrollBottom = 0;
              if (hasBottomScroll) {
                scrollBottom = 15;
              }
              height = bounds.height - parseFloat(style.borderTopWidth) - parseFloat(style.borderBottomWidth) - scrollBottom;
              out = {
                width: 15,
                height: height * 0.975 * (height / target.scrollHeight),
                left: bounds.left + bounds.width - parseFloat(style.borderLeftWidth) - 15
              };
              fitAdj = 0;
              if (height < 408 && this.target === document.body) {
                fitAdj = -0.00011 * Math.pow(height, 2) - 0.00727 * height + 22.58;
              }
              if (this.target !== document.body) {
                out.height = Math.max(out.height, 24);
              }
              scrollPercentage = target.scrollTop / (target.scrollHeight - height);
              out.top = scrollPercentage * (height - out.height - fitAdj) + bounds.top + parseFloat(style.borderTopWidth);
              if (this.target === document.body) {
                out.height = Math.max(out.height, 24);
              }
              return out;
          }
        } else {
          return getBounds(this.target);
        }
      };
  
      _Tether.prototype.clearCache = function() {
        return this._cache = {};
      };
  
      _Tether.prototype.cache = function(k, getter) {
        if (this._cache == null) {
          this._cache = {};
        }
        if (this._cache[k] == null) {
          this._cache[k] = getter.call(this);
        }
        return this._cache[k];
      };
  
      _Tether.prototype.enable = function(position) {
        if (position == null) {
          position = true;
        }
        addClass(this.target, this.getClass('enabled'));
        addClass(this.element, this.getClass('enabled'));
        this.enabled = true;
        if (this.scrollParent !== document) {
          this.scrollParent.addEventListener('scroll', this.position);
        }
        if (position) {
          return this.position();
        }
      };
  
      _Tether.prototype.disable = function() {
        removeClass(this.target, this.getClass('enabled'));
        removeClass(this.element, this.getClass('enabled'));
        this.enabled = false;
        if (this.scrollParent != null) {
          return this.scrollParent.removeEventListener('scroll', this.position);
        }
      };
  
      _Tether.prototype.destroy = function() {
        var i, tether, _i, _len, _results;
        this.disable();
        _results = [];
        for (i = _i = 0, _len = tethers.length; _i < _len; i = ++_i) {
          tether = tethers[i];
          if (tether === this) {
            tethers.splice(i, 1);
            break;
          } else {
            _results.push(void 0);
          }
        }
        return _results;
      };
  
      _Tether.prototype.updateAttachClasses = function(elementAttach, targetAttach) {
        var add, all, side, sides, _i, _j, _len, _len1, _ref1,
          _this = this;
        if (elementAttach == null) {
          elementAttach = this.attachment;
        }
        if (targetAttach == null) {
          targetAttach = this.targetAttachment;
        }
        sides = ['left', 'top', 'bottom', 'right', 'middle', 'center'];
        if ((_ref1 = this._addAttachClasses) != null ? _ref1.length : void 0) {
          this._addAttachClasses.splice(0, this._addAttachClasses.length);
        }
        add = this._addAttachClasses != null ? this._addAttachClasses : this._addAttachClasses = [];
        if (elementAttach.top) {
          add.push("" + (this.getClass('element-attached')) + "-" + elementAttach.top);
        }
        if (elementAttach.left) {
          add.push("" + (this.getClass('element-attached')) + "-" + elementAttach.left);
        }
        if (targetAttach.top) {
          add.push("" + (this.getClass('target-attached')) + "-" + targetAttach.top);
        }
        if (targetAttach.left) {
          add.push("" + (this.getClass('target-attached')) + "-" + targetAttach.left);
        }
        all = [];
        for (_i = 0, _len = sides.length; _i < _len; _i++) {
          side = sides[_i];
          all.push("" + (this.getClass('element-attached')) + "-" + side);
        }
        for (_j = 0, _len1 = sides.length; _j < _len1; _j++) {
          side = sides[_j];
          all.push("" + (this.getClass('target-attached')) + "-" + side);
        }
        return defer(function() {
          if (_this._addAttachClasses == null) {
            return;
          }
          updateClasses(_this.element, _this._addAttachClasses, all);
          updateClasses(_this.target, _this._addAttachClasses, all);
          return _this._addAttachClasses = void 0;
        });
      };
  
      _Tether.prototype.position = function(flushChanges) {
        var elementPos, elementStyle, height, left, manualOffset, manualTargetOffset, module, next, offset, offsetBorder, offsetParent, offsetParentSize, offsetParentStyle, offsetPosition, ret, scrollLeft, scrollTop, side, targetAttachment, targetOffset, targetPos, targetSize, top, width, _i, _j, _len, _len1, _ref1, _ref2, _ref3, _ref4,
          _this = this;
        if (flushChanges == null) {
          flushChanges = true;
        }
        if (!this.enabled) {
          return;
        }
        this.clearCache();
        targetAttachment = autoToFixedAttachment(this.targetAttachment, this.attachment);
        this.updateAttachClasses(this.attachment, targetAttachment);
        elementPos = this.cache('element-bounds', function() {
          return getBounds(_this.element);
        });
        width = elementPos.width, height = elementPos.height;
        if (width === 0 && height === 0 && (this.lastSize != null)) {
          _ref1 = this.lastSize, width = _ref1.width, height = _ref1.height;
        } else {
          this.lastSize = {
            width: width,
            height: height
          };
        }
        targetSize = targetPos = this.cache('target-bounds', function() {
          return _this.getTargetBounds();
        });
        offset = offsetToPx(attachmentToOffset(this.attachment), {
          width: width,
          height: height
        });
        targetOffset = offsetToPx(attachmentToOffset(targetAttachment), targetSize);
        manualOffset = offsetToPx(this.offset, {
          width: width,
          height: height
        });
        manualTargetOffset = offsetToPx(this.targetOffset, targetSize);
        offset = addOffset(offset, manualOffset);
        targetOffset = addOffset(targetOffset, manualTargetOffset);
        left = targetPos.left + targetOffset.left - offset.left;
        top = targetPos.top + targetOffset.top - offset.top;
        _ref2 = Tether.modules;
        for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
          module = _ref2[_i];
          ret = module.position.call(this, {
            left: left,
            top: top,
            targetAttachment: targetAttachment,
            targetPos: targetPos,
            elementPos: elementPos,
            offset: offset,
            targetOffset: targetOffset,
            manualOffset: manualOffset,
            manualTargetOffset: manualTargetOffset
          });
          if ((ret == null) || typeof ret !== 'object') {
            continue;
          } else if (ret === false) {
            return false;
          } else {
            top = ret.top, left = ret.left;
          }
        }
        next = {
          page: {
            top: top,
            bottom: document.body.scrollHeight - top - height,
            left: left,
            right: document.body.scrollWidth - left - width
          },
          viewport: {
            top: top - pageYOffset,
            bottom: pageYOffset - top - height + innerHeight,
            left: left - pageXOffset,
            right: pageXOffset - left - width + innerWidth
          }
        };
        if (((_ref3 = this.options.optimizations) != null ? _ref3.moveElement : void 0) !== false && (this.targetModifier == null)) {
          offsetParent = this.cache('target-offsetparent', function() {
            return getOffsetParent(_this.target);
          });
          offsetPosition = this.cache('target-offsetparent-bounds', function() {
            return getBounds(offsetParent);
          });
          offsetParentStyle = getComputedStyle(offsetParent);
          elementStyle = getComputedStyle(this.element);
          offsetParentSize = offsetPosition;
          offsetBorder = {};
          _ref4 = ['top', 'left', 'bottom', 'right'];
          for (_j = 0, _len1 = _ref4.length; _j < _len1; _j++) {
            side = _ref4[_j];
            offsetBorder[side] = parseFloat(offsetParentStyle["border-" + side + "-width"]);
          }
          offsetPosition.right = document.body.scrollWidth - offsetPosition.left - offsetParentSize.width + offsetBorder.right;
          offsetPosition.bottom = document.body.scrollHeight - offsetPosition.top - offsetParentSize.height + offsetBorder.bottom;
          if (next.page.top >= (offsetPosition.top + offsetBorder.top) && next.page.bottom >= offsetPosition.bottom) {
            if (next.page.left >= (offsetPosition.left + offsetBorder.left) && next.page.right >= offsetPosition.right) {
              scrollTop = offsetParent.scrollTop;
              scrollLeft = offsetParent.scrollLeft;
              next.offset = {
                top: next.page.top - offsetPosition.top + scrollTop - offsetBorder.top,
                left: next.page.left - offsetPosition.left + scrollLeft - offsetBorder.left
              };
            }
          }
        }
        this.move(next);
        this.history.unshift(next);
        if (this.history.length > 3) {
          this.history.pop();
        }
        if (flushChanges) {
          flush();
        }
        return true;
      };
  
      _Tether.prototype.move = function(position) {
        var css, elVal, found, key, moved, offsetParent, point, same, transcribe, type, val, write, writeCSS, _i, _len, _ref1, _ref2,
          _this = this;
        if (this.element.parentNode == null) {
          return;
        }
        same = {};
        for (type in position) {
          same[type] = {};
          for (key in position[type]) {
            found = false;
            _ref1 = this.history;
            for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
              point = _ref1[_i];
              if (!within((_ref2 = point[type]) != null ? _ref2[key] : void 0, position[type][key])) {
                found = true;
                break;
              }
            }
            if (!found) {
              same[type][key] = true;
            }
          }
        }
        css = {
          top: '',
          left: '',
          right: '',
          bottom: ''
        };
        transcribe = function(same, pos) {
          var xPos, yPos, _ref3;
          if (((_ref3 = _this.options.optimizations) != null ? _ref3.gpu : void 0) !== false) {
            if (same.top) {
              css.top = 0;
              yPos = pos.top;
            } else {
              css.bottom = 0;
              yPos = -pos.bottom;
            }
            if (same.left) {
              css.left = 0;
              xPos = pos.left;
            } else {
              css.right = 0;
              xPos = -pos.right;
            }
            css[transformKey] = "translateX(" + (Math.round(xPos)) + "px) translateY(" + (Math.round(yPos)) + "px)";
            if (transformKey !== 'msTransform') {
              return css[transformKey] += " translateZ(0)";
            }
          } else {
            if (same.top) {
              css.top = "" + pos.top + "px";
            } else {
              css.bottom = "" + pos.bottom + "px";
            }
            if (same.left) {
              return css.left = "" + pos.left + "px";
            } else {
              return css.right = "" + pos.right + "px";
            }
          }
        };
        moved = false;
        if ((same.page.top || same.page.bottom) && (same.page.left || same.page.right)) {
          css.position = 'absolute';
          transcribe(same.page, position.page);
        } else if ((same.viewport.top || same.viewport.bottom) && (same.viewport.left || same.viewport.right)) {
          css.position = 'fixed';
          transcribe(same.viewport, position.viewport);
        } else if ((same.offset != null) && same.offset.top && same.offset.left) {
          css.position = 'absolute';
          offsetParent = this.cache('target-offsetparent', function() {
            return getOffsetParent(_this.target);
          });
          if (getOffsetParent(this.element) !== offsetParent) {
            defer(function() {
              _this.element.parentNode.removeChild(_this.element);
              return offsetParent.appendChild(_this.element);
            });
          }
          transcribe(same.offset, position.offset);
          moved = true;
        } else {
          css.position = 'absolute';
          transcribe({
            top: true,
            left: true
          }, position.page);
        }
        if (!moved && this.element.parentNode.tagName !== 'BODY') {
          this.element.parentNode.removeChild(this.element);
          document.body.appendChild(this.element);
        }
        writeCSS = {};
        write = false;
        for (key in css) {
          val = css[key];
          elVal = this.element.style[key];
          if (elVal !== '' && val !== '' && (key === 'top' || key === 'left' || key === 'bottom' || key === 'right')) {
            elVal = parseFloat(elVal);
            val = parseFloat(val);
          }
          if (elVal !== val) {
            write = true;
            writeCSS[key] = css[key];
          }
        }
        if (write) {
          return defer(function() {
            return extend(_this.element.style, writeCSS);
          });
        }
      };
  
      return _Tether;
  
    })();
  
    Tether.position = position;
  
    window.Tether = extend(_Tether, Tether);
  
  }).call(this);
  
  (function() {
    var BOUNDS_FORMAT, MIRROR_ATTACH, defer, extend, getBoundingRect, getBounds, getOuterSize, getSize, updateClasses, _ref,
      __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
  
    _ref = Tether.Utils, getOuterSize = _ref.getOuterSize, getBounds = _ref.getBounds, getSize = _ref.getSize, extend = _ref.extend, updateClasses = _ref.updateClasses, defer = _ref.defer;
  
    MIRROR_ATTACH = {
      left: 'right',
      right: 'left',
      top: 'bottom',
      bottom: 'top',
      middle: 'middle'
    };
  
    BOUNDS_FORMAT = ['left', 'top', 'right', 'bottom'];
  
    getBoundingRect = function(tether, to) {
      var i, pos, side, size, style, _i, _len;
      if (to === 'scrollParent') {
        to = tether.scrollParent;
      } else if (to === 'window') {
        to = [pageXOffset, pageYOffset, innerWidth + pageXOffset, innerHeight + pageYOffset];
      }
      if (to === document) {
        to = to.documentElement;
      }
      if (to.nodeType != null) {
        pos = size = getBounds(to);
        style = getComputedStyle(to);
        to = [pos.left, pos.top, size.width + pos.left, size.height + pos.top];
        for (i = _i = 0, _len = BOUNDS_FORMAT.length; _i < _len; i = ++_i) {
          side = BOUNDS_FORMAT[i];
          if (side === 'top' || side === 'left') {
            to[i] += parseFloat(style["border-" + side + "-width"]);
          } else {
            to[i] -= parseFloat(style["border-" + side + "-width"]);
          }
        }
      }
      return to;
    };
  
    Tether.modules.push({
      position: function(_arg) {
        var addClasses, allClasses, attachment, bounds, changeAttachX, changeAttachY, cls, constraint, eAttachment, height, left, oob, oobClass, p, pin, pinned, pinnedClass, removeClass, side, tAttachment, targetAttachment, targetHeight, targetSize, targetWidth, to, top, width, _i, _j, _k, _l, _len, _len1, _len2, _len3, _len4, _len5, _m, _n, _ref1, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7, _ref8,
          _this = this;
        top = _arg.top, left = _arg.left, targetAttachment = _arg.targetAttachment;
        if (!this.options.constraints) {
          return true;
        }
        removeClass = function(prefix) {
          var side, _i, _len, _results;
          _this.removeClass(prefix);
          _results = [];
          for (_i = 0, _len = BOUNDS_FORMAT.length; _i < _len; _i++) {
            side = BOUNDS_FORMAT[_i];
            _results.push(_this.removeClass("" + prefix + "-" + side));
          }
          return _results;
        };
        _ref1 = this.cache('element-bounds', function() {
          return getBounds(_this.element);
        }), height = _ref1.height, width = _ref1.width;
        if (width === 0 && height === 0 && (this.lastSize != null)) {
          _ref2 = this.lastSize, width = _ref2.width, height = _ref2.height;
        }
        targetSize = this.cache('target-bounds', function() {
          return _this.getTargetBounds();
        });
        targetHeight = targetSize.height;
        targetWidth = targetSize.width;
        tAttachment = {};
        eAttachment = {};
        allClasses = [this.getClass('pinned'), this.getClass('out-of-bounds')];
        _ref3 = this.options.constraints;
        for (_i = 0, _len = _ref3.length; _i < _len; _i++) {
          constraint = _ref3[_i];
          if (constraint.outOfBoundsClass) {
            allClasses.push(constraint.outOfBoundsClass);
          }
          if (constraint.pinnedClass) {
            allClasses.push(constraint.pinnedClass);
          }
        }
        for (_j = 0, _len1 = allClasses.length; _j < _len1; _j++) {
          cls = allClasses[_j];
          _ref4 = ['left', 'top', 'right', 'bottom'];
          for (_k = 0, _len2 = _ref4.length; _k < _len2; _k++) {
            side = _ref4[_k];
            allClasses.push("" + cls + "-" + side);
          }
        }
        addClasses = [];
        tAttachment = extend({}, targetAttachment);
        eAttachment = extend({}, this.attachment);
        _ref5 = this.options.constraints;
        for (_l = 0, _len3 = _ref5.length; _l < _len3; _l++) {
          constraint = _ref5[_l];
          to = constraint.to, attachment = constraint.attachment, pin = constraint.pin;
          if (attachment == null) {
            attachment = '';
          }
          if (__indexOf.call(attachment, ' ') >= 0) {
            _ref6 = attachment.split(' '), changeAttachY = _ref6[0], changeAttachX = _ref6[1];
          } else {
            changeAttachX = changeAttachY = attachment;
          }
          bounds = getBoundingRect(this, to);
          if (changeAttachY === 'target' || changeAttachY === 'both') {
            if (top < bounds[1] && tAttachment.top === 'top') {
              top += targetHeight;
              tAttachment.top = 'bottom';
            }
            if (top + height > bounds[3] && tAttachment.top === 'bottom') {
              top -= targetHeight;
              tAttachment.top = 'top';
            }
          }
          if (changeAttachY === 'together') {
            if (top < bounds[1] && tAttachment.top === 'top') {
              if (eAttachment.top === 'bottom') {
                top += targetHeight;
                tAttachment.top = 'bottom';
                top += height;
                eAttachment.top = 'top';
              } else if (eAttachment.top === 'top') {
                top += targetHeight;
                tAttachment.top = 'bottom';
                top -= height;
                eAttachment.top = 'bottom';
              }
            }
            if (top + height > bounds[3] && tAttachment.top === 'bottom') {
              if (eAttachment.top === 'top') {
                top -= targetHeight;
                tAttachment.top = 'top';
                top -= height;
                eAttachment.top = 'bottom';
              } else if (eAttachment.top === 'bottom') {
                top -= targetHeight;
                tAttachment.top = 'top';
                top += height;
                eAttachment.top = 'top';
              }
            }
          }
          if (changeAttachX === 'target' || changeAttachX === 'both') {
            if (left < bounds[0] && tAttachment.left === 'left') {
              left += targetWidth;
              tAttachment.left = 'right';
            }
            if (left + width > bounds[2] && tAttachment.left === 'right') {
              left -= targetWidth;
              tAttachment.left = 'left';
            }
          }
          if (changeAttachX === 'together') {
            if (left < bounds[0] && tAttachment.left === 'left') {
              if (eAttachment.left === 'right') {
                left += targetWidth;
                tAttachment.left = 'right';
                left += width;
                eAttachment.left = 'left';
              } else if (eAttachment.left === 'left') {
                left += targetWidth;
                tAttachment.left = 'right';
                left -= width;
                eAttachment.left = 'right';
              }
            } else if (left + width > bounds[2] && tAttachment.left === 'right') {
              if (eAttachment.left === 'left') {
                left -= targetWidth;
                tAttachment.left = 'left';
                left -= width;
                eAttachment.left = 'right';
              } else if (eAttachment.left === 'right') {
                left -= targetWidth;
                tAttachment.left = 'left';
                left += width;
                eAttachment.left = 'left';
              }
            }
          }
          if (changeAttachY === 'element' || changeAttachY === 'both') {
            if (top < bounds[1] && eAttachment.top === 'bottom') {
              top += height;
              eAttachment.top = 'top';
            }
            if (top + height > bounds[3] && eAttachment.top === 'top') {
              top -= height;
              eAttachment.top = 'bottom';
            }
          }
          if (changeAttachX === 'element' || changeAttachX === 'both') {
            if (left < bounds[0] && eAttachment.left === 'right') {
              left += width;
              eAttachment.left = 'left';
            }
            if (left + width > bounds[2] && eAttachment.left === 'left') {
              left -= width;
              eAttachment.left = 'right';
            }
          }
          if (typeof pin === 'string') {
            pin = (function() {
              var _len4, _m, _ref7, _results;
              _ref7 = pin.split(',');
              _results = [];
              for (_m = 0, _len4 = _ref7.length; _m < _len4; _m++) {
                p = _ref7[_m];
                _results.push(p.trim());
              }
              return _results;
            })();
          } else if (pin === true) {
            pin = ['top', 'left', 'right', 'bottom'];
          }
          pin || (pin = []);
          pinned = [];
          oob = [];
          if (top < bounds[1]) {
            if (__indexOf.call(pin, 'top') >= 0) {
              top = bounds[1];
              pinned.push('top');
            } else {
              oob.push('top');
            }
          }
          if (top + height > bounds[3]) {
            if (__indexOf.call(pin, 'bottom') >= 0) {
              top = bounds[3] - height;
              pinned.push('bottom');
            } else {
              oob.push('bottom');
            }
          }
          if (left < bounds[0]) {
            if (__indexOf.call(pin, 'left') >= 0) {
              left = bounds[0];
              pinned.push('left');
            } else {
              oob.push('left');
            }
          }
          if (left + width > bounds[2]) {
            if (__indexOf.call(pin, 'right') >= 0) {
              left = bounds[2] - width;
              pinned.push('right');
            } else {
              oob.push('right');
            }
          }
          if (pinned.length) {
            pinnedClass = (_ref7 = this.options.pinnedClass) != null ? _ref7 : this.getClass('pinned');
            addClasses.push(pinnedClass);
            for (_m = 0, _len4 = pinned.length; _m < _len4; _m++) {
              side = pinned[_m];
              addClasses.push("" + pinnedClass + "-" + side);
            }
          }
          if (oob.length) {
            oobClass = (_ref8 = this.options.outOfBoundsClass) != null ? _ref8 : this.getClass('out-of-bounds');
            addClasses.push(oobClass);
            for (_n = 0, _len5 = oob.length; _n < _len5; _n++) {
              side = oob[_n];
              addClasses.push("" + oobClass + "-" + side);
            }
          }
          if (__indexOf.call(pinned, 'left') >= 0 || __indexOf.call(pinned, 'right') >= 0) {
            eAttachment.left = tAttachment.left = false;
          }
          if (__indexOf.call(pinned, 'top') >= 0 || __indexOf.call(pinned, 'bottom') >= 0) {
            eAttachment.top = tAttachment.top = false;
          }
          if (tAttachment.top !== targetAttachment.top || tAttachment.left !== targetAttachment.left || eAttachment.top !== this.attachment.top || eAttachment.left !== this.attachment.left) {
            this.updateAttachClasses(eAttachment, tAttachment);
          }
        }
        defer(function() {
          updateClasses(_this.target, addClasses, allClasses);
          return updateClasses(_this.element, addClasses, allClasses);
        });
        return {
          top: top,
          left: left
        };
      }
    });
  
  }).call(this);
  
  (function() {
    var defer, getBounds, updateClasses, _ref;
  
    _ref = Tether.Utils, getBounds = _ref.getBounds, updateClasses = _ref.updateClasses, defer = _ref.defer;
  
    Tether.modules.push({
      position: function(_arg) {
        var abutted, addClasses, allClasses, bottom, height, left, right, side, sides, targetPos, top, width, _i, _j, _k, _l, _len, _len1, _len2, _len3, _ref1, _ref2, _ref3, _ref4, _ref5,
          _this = this;
        top = _arg.top, left = _arg.left;
        _ref1 = this.cache('element-bounds', function() {
          return getBounds(_this.element);
        }), height = _ref1.height, width = _ref1.width;
        targetPos = this.getTargetBounds();
        bottom = top + height;
        right = left + width;
        abutted = [];
        if (top <= targetPos.bottom && bottom >= targetPos.top) {
          _ref2 = ['left', 'right'];
          for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
            side = _ref2[_i];
            if ((_ref3 = targetPos[side]) === left || _ref3 === right) {
              abutted.push(side);
            }
          }
        }
        if (left <= targetPos.right && right >= targetPos.left) {
          _ref4 = ['top', 'bottom'];
          for (_j = 0, _len1 = _ref4.length; _j < _len1; _j++) {
            side = _ref4[_j];
            if ((_ref5 = targetPos[side]) === top || _ref5 === bottom) {
              abutted.push(side);
            }
          }
        }
        allClasses = [];
        addClasses = [];
        sides = ['left', 'top', 'right', 'bottom'];
        allClasses.push(this.getClass('abutted'));
        for (_k = 0, _len2 = sides.length; _k < _len2; _k++) {
          side = sides[_k];
          allClasses.push("" + (this.getClass('abutted')) + "-" + side);
        }
        if (abutted.length) {
          addClasses.push(this.getClass('abutted'));
        }
        for (_l = 0, _len3 = abutted.length; _l < _len3; _l++) {
          side = abutted[_l];
          addClasses.push("" + (this.getClass('abutted')) + "-" + side);
        }
        defer(function() {
          updateClasses(_this.target, addClasses, allClasses);
          return updateClasses(_this.element, addClasses, allClasses);
        });
        return true;
      }
    });
  
  }).call(this);
  
  (function() {
    Tether.modules.push({
      position: function(_arg) {
        var left, result, shift, shiftLeft, shiftTop, top, _ref;
        top = _arg.top, left = _arg.left;
        if (!this.options.shift) {
          return;
        }
        result = function(val) {
          if (typeof val === 'function') {
            return val.call(this, {
              top: top,
              left: left
            });
          } else {
            return val;
          }
        };
        shift = result(this.options.shift);
        if (typeof shift === 'string') {
          shift = shift.split(' ');
          shift[1] || (shift[1] = shift[0]);
          shiftTop = shift[0], shiftLeft = shift[1];
          shiftTop = parseFloat(shiftTop, 10);
          shiftLeft = parseFloat(shiftLeft, 10);
        } else {
          _ref = [shift.top, shift.left], shiftTop = _ref[0], shiftLeft = _ref[1];
        }
        top += shiftTop;
        left += shiftLeft;
        return {
          top: top,
          left: left
        };
      }
    });
  
  }).call(this);
  
  (function() {
    var ATTACHMENT, Evented, Shepherd, Step, Tour, addClass, createFromHTML, extend, getBounds, matchesSelector, parseShorthand, removeClass, uniqueId, _ref,
      __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
      __hasProp = {}.hasOwnProperty,
      __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
  
    _ref = Tether.Utils, extend = _ref.extend, removeClass = _ref.removeClass, addClass = _ref.addClass, Evented = _ref.Evented, getBounds = _ref.getBounds, uniqueId = _ref.uniqueId;
  
    ATTACHMENT = {
      'top': 'top center',
      'left': 'middle right',
      'right': 'middle left',
      'bottom': 'bottom center'
    };
  
    createFromHTML = function(html) {
      var el;
      el = document.createElement('div');
      el.innerHTML = html;
      return el.children[0];
    };
  
    matchesSelector = function(el, sel) {
      var matches, _ref1, _ref2, _ref3, _ref4;
      matches = (_ref1 = (_ref2 = (_ref3 = (_ref4 = el.matches) != null ? _ref4 : el.matchesSelector) != null ? _ref3 : el.webkitMatchesSelector) != null ? _ref2 : el.mozMatchesSelector) != null ? _ref1 : el.oMatchesSelector;
      return matches.call(el, sel);
    };
  
    parseShorthand = function(obj, props) {
      var i, out, prop, vals, _i, _len;
      if (obj == null) {
        return obj;
      } else if (typeof obj === 'object') {
        return obj;
      } else {
        vals = obj.split(' ');
        if (vals.length > props.length) {
          vals[0] = vals.slice(0, +(vals.length - props.length) + 1 || 9e9).join(' ');
          vals.splice(1, vals.length - props.length);
        }
        out = {};
        for (i = _i = 0, _len = props.length; _i < _len; i = ++_i) {
          prop = props[i];
          out[prop] = vals[i];
        }
        return out;
      }
    };
  
    Step = (function(_super) {
      __extends(Step, _super);
  
      function Step(tour, options) {
        this.tour = tour;
        this.destroy = __bind(this.destroy, this);
        this.scrollTo = __bind(this.scrollTo, this);
        this.complete = __bind(this.complete, this);
        this.cancel = __bind(this.cancel, this);
        this.isOpen = __bind(this.isOpen, this);
        this.hide = __bind(this.hide, this);
        this.show = __bind(this.show, this);
        this.setOptions(options);
        this;
      }
  
      Step.prototype.setOptions = function(options) {
        var event, handler, _base, _ref1;
        this.options = options != null ? options : {};
        this.destroy();
        this.id = this.options.id || this.id || ("step-" + (uniqueId()));
        if (this.options.when) {
          _ref1 = this.options.when;
          for (event in _ref1) {
            handler = _ref1[event];
            this.on(event, handler, this);
          }
        }
        return (_base = this.options).buttons != null ? (_base = this.options).buttons : _base.buttons = [
          {
            text: 'Next',
            action: this.tour.next
          }
        ];
      };
  
      Step.prototype.getTour = function() {
        return this.tour;
      };
  
      Step.prototype.bindAdvance = function() {
        var event, handler, selector, _ref1,
          _this = this;
        _ref1 = parseShorthand(this.options.advanceOn, ['event', 'selector']), event = _ref1.event, selector = _ref1.selector;
        handler = function(e) {
          if (!_this.isOpen()) {
            return;
          }
          if (selector != null) {
            if (matchesSelector(e.target, selector)) {
              return _this.tour.next();
            }
          } else {
            if (_this.el && e.target === _this.el) {
              return _this.tour.next();
            }
          }
        };
        document.body.addEventListener(event, handler);
        return this.on('destroy', function() {
          return document.body.removeEventListener(event, handler);
        });
      };
  
      Step.prototype.getAttachTo = function() {
        var opts;
        opts = parseShorthand(this.options.attachTo, ['element', 'on']);
        if (opts == null) {
          opts = {};
        }
        if (typeof opts.element === 'string') {
          opts.element = document.querySelector(opts.element);
          if (opts.element == null) {
            throw new Error("Shepherd step's attachTo was not found in the page");
          }
        }
        return opts;
      };
  
      Step.prototype.setupTether = function() {
        var attachment, opts, tetherOpts;
        if (typeof Tether === "undefined" || Tether === null) {
          throw new Error("Using the attachment feature of Shepherd requires the Tether library");
        }
        opts = this.getAttachTo();
        attachment = ATTACHMENT[opts.on || 'right'];
        if (opts.element == null) {
          opts.element = 'viewport';
          attachment = 'middle center';
        }
        tetherOpts = {
          classPrefix: 'shepherd',
          element: this.el,
          constraints: [
            {
              to: 'window',
              pin: true,
              attachment: 'together'
            }
          ],
          target: opts.element,
          offset: opts.offset || '0 0',
          attachment: attachment
        };
        return this.tether = new Tether(extend(tetherOpts, this.options.tetherOptions));
      };
  
      Step.prototype.show = function() {
        var _ref1,
          _this = this;
        if (this.el == null) {
          this.render();
        }
        addClass(this.el, 'shepherd-open');
        if ((_ref1 = this.tether) != null) {
          _ref1.enable();
        }
        if (this.options.scrollTo) {
          setTimeout(function() {
            return _this.scrollTo();
          });
        }
        return this.trigger('show');
      };
  
      Step.prototype.hide = function() {
        var _ref1;
        removeClass(this.el, 'shepherd-open');
        if ((_ref1 = this.tether) != null) {
          _ref1.disable();
        }
        return this.trigger('hide');
      };
  
      Step.prototype.isOpen = function() {
        return hasClass(this.el, 'shepherd-open');
      };
  
      Step.prototype.cancel = function() {
        this.hide();
        return this.trigger('cancel');
      };
  
      Step.prototype.complete = function() {
        this.hide();
        return this.trigger('complete');
      };
  
      Step.prototype.scrollTo = function() {
        var element;
        element = this.getAttachTo().element;
        return element != null ? element.scrollIntoView() : void 0;
      };
  
      Step.prototype.destroy = function() {
        var _ref1;
        if (this.el != null) {
          document.body.removeChild(this.el);
          delete this.el;
        }
        if ((_ref1 = this.tether) != null) {
          _ref1.destroy();
        }
        return this.trigger('destroy');
      };
  
      Step.prototype.render = function() {
        var button, buttons, cfg, content, footer, header, paragraph, paragraphs, text, _i, _j, _len, _len1, _ref1, _ref2, _ref3;
        if (this.el != null) {
          this.destroy();
        }
        this.el = createFromHTML("<div class='shepherd-step " + ((_ref1 = this.options.classes) != null ? _ref1 : '') + "' data-id='" + this.id + "'></div>");
        content = document.createElement('div');
        content.className = 'shepherd-content';
        this.el.appendChild(content);
        if (this.options.title != null) {
          header = document.createElement('header');
          header.innerHTML = "<h3 class='shepherd-title'>" + this.options.title + "</h3>";
          this.el.className += ' shepherd-has-title';
          content.appendChild(header);
        }
        if (this.options.text != null) {
          text = createFromHTML("<div class='shepherd-text'></div>");
          paragraphs = this.options.text;
          if (typeof paragraphs === 'string') {
            paragraphs = [paragraphs];
          }
          for (_i = 0, _len = paragraphs.length; _i < _len; _i++) {
            paragraph = paragraphs[_i];
            text.innerHTML += "<p>" + paragraph + "</p>";
          }
          content.appendChild(text);
        }
        footer = document.createElement('footer');
        if (this.options.buttons) {
          buttons = createFromHTML("<ul class='shepherd-buttons'></ul>");
          _ref2 = this.options.buttons;
          for (_j = 0, _len1 = _ref2.length; _j < _len1; _j++) {
            cfg = _ref2[_j];
            button = createFromHTML("<li><a class='shepherd-button " + ((_ref3 = cfg.classes) != null ? _ref3 : '') + "'>" + cfg.text + "</a>");
            buttons.appendChild(button);
            this.bindButtonEvents(cfg, button.querySelector('a'));
          }
          footer.appendChild(buttons);
        }
        content.appendChild(footer);
        document.body.appendChild(this.el);
        this.setupTether();
        if (this.options.advanceOn) {
          return this.bindAdvance();
        }
      };
  
      Step.prototype.bindButtonEvents = function(cfg, el) {
        var event, handler, page, _ref1,
          _this = this;
        if (cfg.events == null) {
          cfg.events = {};
        }
        if (cfg.action != null) {
          cfg.events.click = cfg.action;
        }
        _ref1 = cfg.events;
        for (event in _ref1) {
          handler = _ref1[event];
          if (typeof handler === 'string') {
            page = handler;
            handler = function() {
              return _this.tour.show(page);
            };
          }
          el.addEventListener(event, handler);
        }
        return this.on('destroy', function() {
          var _ref2, _results;
          _ref2 = cfg.events;
          _results = [];
          for (event in _ref2) {
            handler = _ref2[event];
            _results.push(el.removeEventListener(event, handler));
          }
          return _results;
        });
      };
  
      return Step;
  
    })(Evented);
  
    Tour = (function(_super) {
      __extends(Tour, _super);
  
      function Tour(options) {
        var event, _i, _len, _ref1, _ref2,
          _this = this;
        this.options = options != null ? options : {};
        this.hide = __bind(this.hide, this);
        this.cancel = __bind(this.cancel, this);
        this.back = __bind(this.back, this);
        this.next = __bind(this.next, this);
        this.steps = (_ref1 = this.options.steps) != null ? _ref1 : [];
        _ref2 = ['complete', 'cancel', 'hide', 'start', 'show'];
        for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
          event = _ref2[_i];
          this.on(event, function(opts) {
            if (opts == null) {
              opts = {};
            }
            opts.tour = _this;
            return Shepherd.trigger(event, opts);
          });
        }
        this;
      }
  
      Tour.prototype.addStep = function(name, step) {
        var _ref1;
        if (step == null) {
          step = name;
        }
        if (!(step instanceof Step)) {
          if ((_ref1 = typeof name) === 'string' || _ref1 === 'number') {
            step.id = name.toString();
          }
          step = extend({}, this.options.defaults, step);
          step = new Step(this, step);
        } else {
          step.tour = this;
        }
        this.steps.push(step);
        return step;
      };
  
      Tour.prototype.getById = function(id) {
        var step, _i, _len, _ref1;
        _ref1 = this.steps;
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          step = _ref1[_i];
          if (step.id === id) {
            return step;
          }
        }
      };
  
      Tour.prototype.getCurrentStep = function() {
        return this.currentStep;
      };
  
      Tour.prototype.next = function() {
        var index;
        index = this.steps.indexOf(this.currentStep);
        if (index === this.steps.length - 1) {
          this.hide(index);
          this.trigger('complete');
          return this.done();
        } else {
          return this.show(index + 1);
        }
      };
  
      Tour.prototype.back = function() {
        var index;
        index = this.steps.indexOf(this.currentStep);
        return this.show(index - 1);
      };
  
      Tour.prototype.cancel = function() {
        var _ref1;
        if ((_ref1 = this.currentStep) != null) {
          _ref1.cancel();
        }
        this.trigger('cancel');
        return this.done();
      };
  
      Tour.prototype.hide = function() {
        var _ref1;
        if ((_ref1 = this.currentStep) != null) {
          _ref1.hide();
        }
        this.trigger('hide');
        return this.done();
      };
  
      Tour.prototype.done = function() {
        return Shepherd.activeTour = null;
      };
  
      Tour.prototype.show = function(key) {
        var next;
        if (key == null) {
          key = 0;
        }
        if (this.currentStep) {
          this.currentStep.hide();
        }
        Shepherd.activeTour = this;
        if (typeof key === 'string') {
          next = this.getById(key);
        } else {
          next = this.steps[key];
        }
        if (next) {
          this.trigger('show', {
            step: next,
            previous: this.currentStep
          });
          this.currentStep = next;
          return next.show();
        }
      };
  
      Tour.prototype.start = function() {
        this.trigger('start');
        this.currentStep = null;
        return this.next();
      };
  
      return Tour;
  
    })(Evented);
  
    Shepherd = new Evented;
  
    extend(Shepherd, {
      Tour: Tour,
      Step: Step
    });
  
    window.Shepherd = Shepherd;
  
  }).call(this);
  