(function() {

// Set up LinkedIn Global Namespace
if (typeof(LinkedIn) == 'undefined') {
  LinkedIn = {};
}

// Utility functions
function $(element) { 
  return (typeof element == 'string') ? 
         document.getElementById(element) : element; 
}

function getDOMEventName(eventName) {
  if (eventName && eventName.match(/:/)) return "dataavailable";
  return { keypress: "keydown" }[eventName] || eventName;
}

var $A = function(iterable) {
  if (!iterable) return [];
  var results = [];
  for (var i = 0, length = iterable.length; i < length; i++)
    results.push(iterable[i]);
  return results;
};

Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
};

Function.prototype.bindAsEventListener = function(object) {
  var __method = this, args = $A(arguments), object = args.shift();
  return function(event) {
    return __method.apply(object, [event || window.event].concat(args));
  }
}

function getViewportWidth() {
  return self['innerWidth'] || 
        (document.documentElement['clientWidth'] || document.body['clientWidth']);
}

function getViewportHeight() {
  return self['innerHeight'] || 
        (document.documentElement['clientHeight'] || document.body['clientHeight']);
}

function getOffsetX() {
  return window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft;
}

function getOffsetY() {
  return window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
}

function cumulativeOffsetX(element) {
  var valueL = 0;
  do {
    valueL += element.offsetLeft || 0;
    valueL += element.style.paddingLeft || 0;
    element = element.offsetParent;
  } while (element);
  return valueL;
}

function cumulativeOffsetY(element) {
  var valueT = 0;
  do {
    valueT += element.offsetTop  || 0;
    element = element.offsetParent;
  } while (element);
  return valueT;
}

function cumulativeScrollOffsetX(element) {
  var valueL = 0;
  do {
    valueL += element.scrollLeft || 0;
    element = element.parentNode;
  } while (element);
  return valueL;
}

function cumulativeScrollOffsetY(element) {
  var valueT = 0;
  do {
    valueT += element.scrollTop  || 0;
    element = element.parentNode;
  } while (element);
  return valueT;
}

function positionedOffsetX(element) {
  var valueL = 0;
  do {
    valueL += element.offsetLeft || 0;
    element = element.offsetParent;
    if (element) {
      if (element.tagName == 'BODY') break;
      var p = Element.getStyle(element, 'position');
      if (p == 'relative' || p == 'absolute') break;
    }
  } while (element);
  return valueL;
}

function positionedOffsetY(element) {
  var valueT = 0;
  do {
    valueT += element.offsetTop  || 0;
    element = element.offsetParent;
    if (element) {
      if (element.tagName == 'BODY') break;
      var p = Element.getStyle(element, 'position');
      if (p == 'relative' || p == 'absolute') break;
    }
  } while (element);
  return valueT;
}

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Event = {
  observe: function(element, eventName, handler) {
    element = $(element);
    var name = getDOMEventName(eventName);

    if (element.addEventListener) {
      element.addEventListener(name, handler, false);
    } else {
      element.attachEvent("on" + name, handler);
    }

    return element;
  }
}

// Company Insider Properties
LinkedIn.CompanyInsider = {
  infoWindowWidth: 220,
  infoWindowHeight: 250,
  infoIframeHeight: 250,
  infoIframeWidth: 220,
  iconUrl: 'http://www.linkedin.com/img/icon/icon_company_insider_in_12x12.gif',
  iconWidth: 12,
  iconHeight: 12,
  infoWindowId: 'company-insider-info-window',
  boxClassName: 'company-insider-box',
  popUpClassName: 'company-insider-pop-up',
  
  urlFor: function(companyName, popupFlag) {
    if (!companyName) {
      companyName = "";
    }
    return 'http://www.linkedin.com/companyInsider?data' +
           '&companyName=' + encodeURIComponent(companyName) +
           '&backgroundColor=FFFFFF' +
           '&titleBackgroundColor=FFFFFF' +
           '&textColor=4c4c4c' +
           '&trackinginfo=' + encodeURIComponent(window.location) +
           '&isPopup=' + popupFlag;
  }
};

// Classes
LinkedIn.CompanyInsiderBox = Class.create();
LinkedIn.CompanyInsiderBox.prototype = {
  initialize: function(element, companyName, options) {
    this._element = $(element);
    this._element.className = this._element.className + " " + LinkedIn.CompanyInsider.boxClassName;
    this._companyName = companyName;
    this._options = options || {};
    this._createIFrame();
    return this;
  },
  
  _createIFrame: function() {    
    var iframe = document.createElement("iframe");
    iframe.src = LinkedIn.CompanyInsider.urlFor(this._companyName, 'no');
    iframe.width = LinkedIn.CompanyInsider.infoIframeWidth;
    iframe.height = LinkedIn.CompanyInsider.infoIframeHeight;
    iframe.frameBorder = "no";
    iframe.scrolling = "no";
    this._element.appendChild(iframe);
    this._iframe = iframe;
  }
};

LinkedIn.CompanyInsiderInfoWindow = Class.create();
LinkedIn.CompanyInsiderInfoWindow.prototype = {
  initialize: function() {
    this.marker = null;
    this._createWindow();
    LinkedIn.CompanyInsider.infoWindow = this;
    return this;
  },

  open: function(marker) {
    if (this._marker) {
      this._marker.infoWindow = null;
    }
    this._marker = marker;
    this._marker.infoWindow = this;
    this._iframe.src = LinkedIn.CompanyInsider.urlFor(this._marker.companyName, 'yes');
    this._window.style.display = "inline";
    var windowOffset = this._calculateWindowOffset();
    this._window.style.top = windowOffset.top + "px";
    this._window.style.left = windowOffset.left + "px";
  },

  close: function() {
    if (this._marker) {
      this._marker.infoWindow = null;
    }
    this._marker = null;
    this._window.style.display = "none";
    return false;
  },

  _createWindow: function() {
    var win = document.createElement("div");
    win.id = LinkedIn.CompanyInsider.infoWindowId;
    win.style.position = "absolute";
    win.style.top = "";
    win.style.left = "";
    win.style.width = LinkedIn.CompanyInsider.infoWindowWidth  + "px";
    win.style.height = LinkedIn.CompanyInsider.infoWindowHeight + "px";
    win.style.display = "none";
    var header = document.createElement("div");
    var closeLink = document.createElement("a");
    closeLink.innerHTML = "close";
    closeLink.href = "#";
    closeLink.onclick = this.close.bind(this);
    header.appendChild(closeLink);
    win.appendChild(header);
    var iframe = document.createElement("iframe");
    iframe.width = LinkedIn.CompanyInsider.infoWindowWidth;
    iframe.height = LinkedIn.CompanyInsider.infoIframeHeight;
    iframe.frameBorder = "no";
    iframe.scrolling = "no";
    iframe.allowTransparency = false;
    win.appendChild(iframe);
    document.body.appendChild(win);
    this._window = win;
    this._iframe = iframe;
  },
  
  _calculateWindowOffset: function() {
    var markerOffset = this._marker.markerOffset();
    var windowOffset = {};
    var pageWidth = getViewportWidth();
    var pageHeight = getViewportHeight();
    var markerLeft = markerOffset.left - getOffsetX();
    var markerTop = markerOffset.top - getOffsetY();
    if (markerTop < pageHeight / 2) {
        windowOffset.top = markerOffset.top + LinkedIn.CompanyInsider.iconHeight + 2;
      if (markerLeft < pageWidth /2) {
        // top-left
        windowOffset.left = markerOffset.left - 27;
        this._window.className = "top-left";
      } else {
        // top-right
        windowOffset.left = markerOffset.left - LinkedIn.CompanyInsider.infoWindowWidth + LinkedIn.CompanyInsider.iconWidth + 30;
        this._window.className = "top-right";
      }
    } else {
        windowOffset.top = markerOffset.top - LinkedIn.CompanyInsider.infoWindowHeight - LinkedIn.CompanyInsider.iconHeight - 15;
      if (markerLeft < pageWidth /2) {
        // bottom-left
        windowOffset.left = markerOffset.left - 27;
        this._window.className = "bottom-left";
      } else {
        // bottom-right
        windowOffset.left = markerOffset.left - LinkedIn.CompanyInsider.infoWindowWidth + LinkedIn.CompanyInsider.iconWidth + 30;
        this._window.className = "bottom-right";
      }
    }
    return windowOffset;
  }
};

LinkedIn.CompanyInsiderPopup = Class.create();
LinkedIn.CompanyInsiderPopup.prototype = {
  initialize: function(element, companyName, options) {
    this._element = $(element);
    this._element.className = this._element.className + " " + LinkedIn.CompanyInsider.popUpClassName;
    this.companyName = companyName;
    this._options = options || {};
    this.infoWindow = null;
    this._createIcon();
    this._attachEventHandlers();
    return this;
  },
  
  _createIcon: function() {
    var imageElement = document.createElement("img");
    imageElement.src = LinkedIn.CompanyInsider.iconUrl;
    imageElement.width = LinkedIn.CompanyInsider.iconWidth;
    imageElement.height = LinkedIn.CompanyInsider.iconHeight;
    this._element.appendChild(imageElement);
  },
  
  _attachEventHandlers: function() {
    this._element.onclick = this._toggleInfoWindow.bindAsEventListener(this);
  },
   
  markerOffset: function() {
   return { top: cumulativeOffsetY(this._element.lastChild), left: cumulativeOffsetX(this._element.lastChild) };
   // return { top: this._element.offsetTop, left: this._element.offsetLeft };
  },
  
  _toggleInfoWindow: function(event) {
    if (this.infoWindow) {
      this._closeInfoWindow(event);
    } else {   
      this._openInfoWindow(event);
    }
  },
  
  _openInfoWindow: function(event) {
    if (!LinkedIn.CompanyInsider.infoWindow) {
      new LinkedIn.CompanyInsiderInfoWindow();
    }

    var infoWindow = LinkedIn.CompanyInsider.infoWindow;
    // If there is a marker owns that window, release and close it
    if (infoWindow.marker) {
      infoWindow.close();
    }
    infoWindow.open(this);
  
  },
  
  _closeInfoWindow: function(event) {
    this.infoWindow.close();    
  }
};

LinkedIn.CompanyInsiderStylesheet = Class.create();
LinkedIn.CompanyInsiderStylesheet.prototype = {
  initialize: function() {
    css = this._createStylesheet();
    styleNode = document.createElement("style");
    styleNode.type = "text/css";
    if (styleNode.styleSheet) {
      styleNode.styleSheet.cssText = css; 
    } else { 
      var cssText = document.createTextNode(css); 
      styleNode.appendChild(cssText);
    }

    document.getElementsByTagName("head")[0].appendChild(styleNode);
    return this;
  },
  
  _createStylesheet: function() {  
    var css = '#company-insider-info-window { position: relative; text-align:right; padding-top:30px; }'
    + '#company-insider-info-window div a { color:#ccc; display:block; text-decoration:none; font:11px arial; position:absolute; top:25px; right:25px; -right:15px; width:10px; }'
    + '#company-insider-info-window div { display:block;width:15px; } '
    + '#company-insider-info-window iframe {padding: 0; margin: 0; width: 210px; height: 220px; position: absolute; left: 3px; }'
    + 'div.bottom-right div a, div.bottom-left div a {  margin-top:-20px; }'
    + 'div.bottom-right iframe, div.bottom-left iframe { top:25px; }'
    + 'div.top-right iframe, div.top-left iframe { top:40px; }'
    + 'div.bottom-right { background:url(http://www.linkedin.com/img/bg/bg_co_btm_rt.png) no-repeat;  -background:url(http://www.linkedin.com/img/bg/bg_co_btm_rt.gif) no-repeat;}'
    + 'div.bottom-left { background:url(http://www.linkedin.com/img/bg/bg_co_btm_lt.png) no-repeat;  -background:url(http://www.linkedin.com/img/bg/bg_co_btm_lft2.gif) no-repeat;}'
    + 'div.top-right {background:url(http://www.linkedin.com/img/bg/bg_co_top_rt.png) no-repeat;  -background:url(http://www.linkedin.com/img/bg/bg_co_top_rt.gif) no-repeat;}'
    + 'div.top-left {background:url(http://www.linkedin.com/img/bg/bg_co_top_lt.png) no-repeat;  -background:url(http://www.linkedin.com/img/bg/bg_co_top_lt.gif) no-repeat;}';
    return css;
  }
};

// To create the window and cache it in the DOM
Event.observe(window, "load", function() { 
new LinkedIn.CompanyInsiderInfoWindow(); 
new LinkedIn.CompanyInsiderStylesheet();

});

})();