//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2000-2004 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************

//----------------------------------------------------------------------------
// Code to determine the browser and version.
//----------------------------------------------------------------------------

function Browser() {

  var ua, s, i;

  this.isIE    = false;  // Internet Explorer
  this.isOP    = false;  // Opera
  this.isNS    = false;  // Netscape
  this.version = null;

  ua = navigator.userAgent;

  s = "Opera";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isOP = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as Netscape 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }

  s = "MSIE";
  if ((i = ua.indexOf(s))) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }
}

var browser = new Browser();

//----------------------------------------------------------------------------
// Code for handling the menu bar and active button.
//----------------------------------------------------------------------------

var activeButton = null;

// Capture mouse clicks on the page so any active button can be
// deactivated.

if (browser.isIE)
  document.onmousedown = pageMousedown;
else
  document.addEventListener("mousedown", pageMousedown, true);

function pageMousedown(event) {

  var el;

  // If there is no active button, exit.

  if (activeButton == null)
      return;

  // Find the element that was clicked on.

  if (browser.isIE)
    el = window.event.srcElement;
  else
    el = (event.target.tagName ? event.target : event.target.parentNode);

  // If the active button was clicked on, exit.

  if (el == activeButton)
      return;

  // If the element is not part of a menu, reset and clear the active
  // button.

  if (getContainerWith(el, "DIV", "menu") == null) {
    resetButton(activeButton);
    activeButton = null;
  }
}

function buttonClick(event, menuId) {

  var button;

  // Get the target button element.

  if (browser.isIE)
    button = window.event.srcElement;
  else
    button = event.currentTarget;

  // Blur focus from the link to remove that annoying outline.

  button.blur();

  // Associate the named menu to this button if not already done.
  // Additionally, initialize menu display.

  if (button.menu == null) {
    button.menu = document.getElementById(menuId);
    if (button.menu.isInitialized == null)
      menuInit(button.menu);
  }

  // Reset the currently active button, if any.

  if (activeButton != null)
    resetButton(activeButton);

  // Activate this button, unless it was the currently active one.

  if (button != activeButton) {
    depressButton(button);
    activeButton = button;
  }
  else
    activeButton = null;

  return false;
}

function buttonMouseover(event, menuId) {

  var button;

  // Find the target button element.

  if (browser.isIE)
    button = window.event.srcElement;
  else
    button = event.currentTarget;

  // If any other button menu is active, make this one active instead.

  if (activeButton != null && activeButton != button)
    buttonClick(event, menuId);
}

function depressButton(button) {

  var x, y;

  // Update the button's style class to make it look like it's
  // depressed.

  button.className += " menuButtonActive";

  // Position the associated drop down menu under the button and
  // show it.

  x = getPageOffsetLeft(button);
  y = getPageOffsetTop(button) + button.offsetHeight;

  // For IE, adjust position.

  if (browser.isIE) {
    x += button.offsetParent.clientLeft;
    y += button.offsetParent.clientTop;
  }

  button.menu.style.left = x + "px";
  button.menu.style.top  = y + "px";
  button.menu.style.visibility = "visible";

  // For IE; size, position and show the menu's IFRAME as well.

  if (button.menu.iframeEl != null)
  {
    button.menu.iframeEl.style.left = button.menu.style.left;
    button.menu.iframeEl.style.top  = button.menu.style.top;
    button.menu.iframeEl.style.width  = button.menu.offsetWidth + "px";
    button.menu.iframeEl.style.height = button.menu.offsetHeight + "px";
    button.menu.iframeEl.style.display = "";
  }
}

function resetButton(button) {

  // Restore the button's style class.

  removeClassName(button, "menuButtonActive");

  // Hide the button's menu, first closing any sub menus.

  if (button.menu != null) {
    closeSubMenu(button.menu);
    button.menu.style.visibility = "hidden";

    // For IE, hide menu's IFRAME as well.

    if (button.menu.iframeEl != null)
      button.menu.iframeEl.style.display = "none";
  }
}

//----------------------------------------------------------------------------
// Code to handle the menus and sub menus.
//----------------------------------------------------------------------------

function menuMouseover(event) {

  var menu;

  // Find the target menu element.

  if (browser.isIE)
    menu = getContainerWith(window.event.srcElement, "DIV", "menu");
  else
    menu = event.currentTarget;

  // Close any active sub menu.

  if (menu.activeItem != null)
    closeSubMenu(menu);
}

function menuItemMouseover(event, menuId) {

  var item, menu, x, y;

  // Find the target item element and its parent menu element.

  if (browser.isIE)
    item = getContainerWith(window.event.srcElement, "A", "menuItem");
  else
    item = event.currentTarget;
  menu = getContainerWith(item, "DIV", "menu");

  // Close any active sub menu and mark this one as active.

  if (menu.activeItem != null)
    closeSubMenu(menu);
  menu.activeItem = item;

  // Highlight the item element.

  item.className += " menuItemHighlight";

  // Initialize the sub menu, if not already done.

  if (item.subMenu == null) {
    item.subMenu = document.getElementById(menuId);
    if (item.subMenu.isInitialized == null)
      menuInit(item.subMenu);
  }

  // Get position for submenu based on the menu item.

  x = getPageOffsetLeft(item) + item.offsetWidth;
  y = getPageOffsetTop(item);

  // Adjust position to fit in view.

  var maxX, maxY;

  if (browser.isIE) {
    maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) +
      (document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth : document.body.clientWidth);
    maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) +
      (document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight : document.body.clientHeight);
  }
  if (browser.isOP) {
    maxX = document.documentElement.scrollLeft + window.innerWidth;
    maxY = document.documentElement.scrollTop  + window.innerHeight;
  }
  if (browser.isNS) {
    maxX = window.scrollX + window.innerWidth;
    maxY = window.scrollY + window.innerHeight;
  }
  maxX -= item.subMenu.offsetWidth;
  maxY -= item.subMenu.offsetHeight;

  if (x > maxX)
    x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth
      + (menu.offsetWidth - item.offsetWidth));
  y = Math.max(0, Math.min(y, maxY));

  // Position and show it.

  item.subMenu.style.left       = x + "px";
  item.subMenu.style.top        = y + "px";
  item.subMenu.style.visibility = "visible";

  // For IE; size, position and show the menu's IFRAME as well.

  if (item.subMenu.iframeEl != null)
  {
    item.subMenu.iframeEl.style.left    = item.subMenu.style.left;
    item.subMenu.iframeEl.style.top     = item.subMenu.style.top;
    item.subMenu.iframeEl.style.width   = item.subMenu.offsetWidth + "px";
    item.subMenu.iframeEl.style.height  = item.subMenu.offsetHeight + "px";
    item.subMenu.iframeEl.style.display = "";
  }

  // Stop the event from bubbling.

  if (browser.isIE)
    window.event.cancelBubble = true;
  else
    event.stopPropagation();
}

function closeSubMenu(menu) {

  if (menu == null || menu.activeItem == null)
    return;

  // Recursively close any sub menus.

  if (menu.activeItem.subMenu != null) {
    closeSubMenu(menu.activeItem.subMenu);


    // Hide the sub menu.
    menu.activeItem.subMenu.style.visibility = "hidden";

    // For IE, hide the sub menu's IFRAME as well.

    if (menu.activeItem.subMenu.iframeEl != null)
      menu.activeItem.subMenu.iframeEl.style.display = "none";

    menu.activeItem.subMenu = null;
  }

  // Deactivate the active menu item.

  removeClassName(menu.activeItem, "menuItemHighlight");
  menu.activeItem = null;
}

//----------------------------------------------------------------------------
// Code to initialize menus.
//----------------------------------------------------------------------------

function menuInit(menu) {

  var itemList, spanList;
  var textEl, arrowEl;
  var itemWidth;
  var w, dw;
  var i, j;

  // For IE, replace arrow characters.

  if (browser.isIE) {
    menu.style.lineHeight = "2.5ex";
    spanList = menu.getElementsByTagName("SPAN");
    for (i = 0; i < spanList.length; i++)
      if (hasClassName(spanList[i], "menuItemArrow")) {
        spanList[i].style.fontFamily = "Webdings";
        spanList[i].firstChild.nodeValue = "4";
      }
  }

  // Find the width of a menu item.

  itemList = menu.getElementsByTagName("A");
  if (itemList.length > 0)
    itemWidth = itemList[0].offsetWidth;
  else
    return;

  // For items with arrows, add padding to item text to make the
  // arrows flush right.

  for (i = 0; i < itemList.length; i++) {
    spanList = itemList[i].getElementsByTagName("SPAN");
    textEl  = null;
    arrowEl = null;
    for (j = 0; j < spanList.length; j++) {
      if (hasClassName(spanList[j], "menuItemText"))
        textEl = spanList[j];
      if (hasClassName(spanList[j], "menuItemArrow")) {
        arrowEl = spanList[j];
      }
    }
    if (textEl != null && arrowEl != null) {
      textEl.style.paddingRight = (itemWidth
        - (textEl.offsetWidth + arrowEl.offsetWidth)) + "px";

      // For Opera, remove the negative right margin to fix a display bug.

      if (browser.isOP)
        arrowEl.style.marginRight = "0px";
    }
  }

  // Fix IE hover problem by setting an explicit width on first item of
  // the menu.

  if (browser.isIE) {
    w = itemList[0].offsetWidth;
    itemList[0].style.width = w + "px";
    dw = itemList[0].offsetWidth - w;
    w -= dw;
    itemList[0].style.width = w + "px";
  }

  // Fix the IE display problem (SELECT elements and other windowed controls
  // overlaying the menu) by adding an IFRAME under the menu.

  if (browser.isIE) {
    menu.iframeEl = menu.parentNode.insertBefore(document.createElement("IFRAME"), menu);
    menu.iframeEl.style.display = "none";
    menu.iframeEl.style.position = "absolute";
  }

  // Mark menu as initialized.

  menu.isInitialized = true;
}

//----------------------------------------------------------------------------
// General utility functions.
//----------------------------------------------------------------------------

function getContainerWith(node, tagName, className) {

  // Starting with the given node, find the nearest containing element
  // with the specified tag name and style class.

  while (node != null) {
    if (node.tagName != null && node.tagName == tagName &&
        hasClassName(node, className))
      return node;
    node = node.parentNode;
  }

  return node;
}

function hasClassName(el, name) {

  var i, list;

  // Return true if the given element currently has the given class
  // name.

  list = el.className.split(" ");
  for (i = 0; i < list.length; i++)
    if (list[i] == name)
      return true;

  return false;
}

function removeClassName(el, name) {

  var i, curList, newList;

  if (el.className == null)
    return;

  // Remove the given class name from the element's className property.

  newList = new Array();
  curList = el.className.split(" ");
  for (i = 0; i < curList.length; i++)
    if (curList[i] != name)
      newList.push(curList[i]);
  el.className = newList.join(" ");
}

function getPageOffsetLeft(el) {

  var x;

  // Return the x coordinate of an element relative to the page.

  x = el.offsetLeft;
  if (el.offsetParent != null)
    x += getPageOffsetLeft(el.offsetParent);

  return x;
}

function getPageOffsetTop(el) {

  var y;

  // Return the x coordinate of an element relative to the page.

  y = el.offsetTop;
  if (el.offsetParent != null)
    y += getPageOffsetTop(el.offsetParent);

  return y;
}

function getXmlHttpObj(url)
{
    var xml = null;
    if (document.all)
    {
      // IE version
      try {
      xml = new ActiveXObject("Microsoft.XMLHTTP");
      // some versions of IE4 and some IE5.0) might be using MSXML2.XMLHTTP.4.0
      xml.Open( "GET", url, false );
      xml.Send()
    }
      catch (e) {
      xml = new ActiveXObject("MSXML2.XMLHTTP.4.0");
      xml.Open( "GET", url, false );
      xml.Send()
      }
   }
   else
   {
      // Mozilla/Netscrap 6+ version
        xml=new XMLHttpRequest();
        xml.open("GET",url,false);
        xml.send(null);
   }

   return xml;
}

/* Functions to navigate through the menu system.
*/

function loadFullStoryFile(tag,lyr,title,url, removeCrumb)
{
    if (removeCrumb)
        removeBreadCrumb(title);
    else
    {
        addBreadCrumb(title, url);
        // User may have selected the menu item. If so, close it.
        closeMenu();
    }
   var xml = getXmlHttpObj(url);
   if (xml != null)
   {
        document.getElementById(lyr).innerHTML=xml.responseText;
   }
}

/*
 * This is just a helper function to call loadFullStoryAndImage() with all default parameters, filled in.
 */
function loadSelectedMenu(url, imgUrl, title)
{
    addBreadCrumb(title, url);
    loadFullStoryAndImage('mainContentTD', 'td', 'mainContent', 'div', url, imgUrl, title);
}
/*
 * This function is similar to loadFullStoryFile(), but is used by the menu links, to load the new content.
 * parentLyr = ID of the parent layer, the contents of which will be replaced. Usually this is the <TD> object with id "mainContentTD".
 * childLyr = ID of the layer under parentLyr, which will be replaced. Usually this will be a <DIV> with ID "mainContent."
 * parentTag and childTag = The element types such as "td", "div" etc.
 * url = URL of the content to fetch.
 * imgUrl = URL of the image, if available.
 * title = Title Text.
 */
function loadFullStoryAndImage(parentLyr,parentTag,childLyr,childTag,url,imgUrl,title)
{
   var xml = null;
   if (document.all)
   {
      // IE version
      try {
          xml = new ActiveXObject("Microsoft.XMLHTTP");
          // some versions of IE4 and some IE5.0) might be using MSXML2.XMLHTTP.4.0
          xml.Open( "GET", url, false );
          xml.Send()
      }
      catch (e) {
          var xml = new ActiveXObject("MSXML2.XMLHTTP.4.0");
          xml.Open( "GET", url, false );
          xml.Send()
      }
   }
   else
   {
      // Mozilla/Netscrap 6+ version
        xml=new XMLHttpRequest();
        xml.open("GET",url,false);
        xml.send(null);
   }

   if (xml != null )
   {
        var parentLyrObj = document.getElementById(parentLyr);      // This is the "block", which will be refreshed with fresh content.
        var childLyrObj = document.getElementById(childLyr);
        var newChildLyrObj = document.createElement(childTag);
        var contentDiv = document.createElement('div');
        var titleDiv = document.createElement('div');
        var docFragment = document.createDocumentFragment();
        var textNode = document.createElement('p');

        newChildLyrObj.className = childLyrObj.className;
        newChildLyrObj.id = childLyrObj.id;

        contentDiv.className = "contentWin";
        contentDiv.id = "contentDiv";

        titleDiv.className = "title";
        titleDiv.id = "storyTitle";

        titleDiv.appendChild(document.createTextNode(title));

        if (imgUrl != 'undefined' && imgUrl != null && imgUrl != '')
        {
           var imageDiv = document.createElement('div');
           var img = document.createElement('img');

           imageDiv.className = "storyImage";
           imageDiv.id = "storyDiv";
           img.src = imgUrl;
           img.width = 200;
           img.height = 150;
           imageDiv.appendChild(img);
           contentDiv.appendChild(imageDiv);
        }

        textNode.appendChild(document.createTextNode(xml.responseText));
        contentDiv.appendChild(textNode);
        //contentDiv.appendChild(document.createTextNode(xml.responseText));
        docFragment.appendChild(titleDiv);
        docFragment.appendChild(contentDiv);
        newChildLyrObj.appendChild(docFragment);
        parentLyrObj.replaceChild(newChildLyrObj, childLyrObj);
   }
}

// Global variable to manage breadcrumbs.

var breadCrumbs = new Array();

function addBreadCrumb(title, url)
{
    var found = false;
    for (var i = 0; i < breadCrumbs.length && !found; i++)
    {
        if (title == breadCrumbs[i].title)
            found = true;
    }

    if (!found)
    {
        if (breadCrumbs.length == 3)    // After 3 links, we lose old links.
        {
            breadCrumbs.shift();
        }
        var newCrumb = new Object;
        newCrumb.title = title;
        newCrumb.url = url;
        breadCrumbs.push(newCrumb);
        displayBreadCrumbs();
    }
}

function removeBreadCrumb(title)
{
    if (breadCrumbs.length < 1)
        return;
    var found = false;
    for (var i = breadCrumbs.length-1; i >=0 && !found; i--)
    {
        if (title == breadCrumbs[i].title)
            found = true;
        breadCrumbs.pop();
    }
    displayBreadCrumbs();
}

function displayBreadCrumbs()
{
    var bcDiv = document.getElementById("breadCrumbs");

    /*  THE FOLLOWING CODE DOESN'T WORK RELIABLY ON BOTH IE AND FIREFOX AND HENCE WE'LL DO IT THE DIRTY WAY.
    var tableElem = document.createElement("table");
    var tbodyElem = document.createElement("tbody");
    var trElem = document.createElement("tr");
    var tdElem = document.createElement("td");

    tableElem.className = "section";

    for (var i = 0; i < breadCrumbs.length; i++)
    {
        var aElem = document.createElement("a");
        aElem.setAttribute('href', 'javascript:loadFullStoryFile("div", "mainContent", "' + breadCrumbs[i].title + '", "' + breadCrumbs[i].url + '");');
        aElem.innerHTML(breadCrumbs[i].title);
        tdElem.appendChild(aElem);
    }

    trElem.appendChild(tdElem);
    tbodyElem.appendChild(trElem);
    tableElem.appendChild(tbodyElem);
    bcDiv.appendChild(tableElem);
    */

    var text = "<table cellpadding='0' cellspacing='2' class='breadCrumbs' width='900' align='left'>" ;
/*
    text += "<tr><td width='20'>";
    text += "<img src='images/blank.gif' width='20' height='1' border='0'>";
    text += "</td><td class='bcChain'>&nbsp;</td></tr>";
*/
    text += "<tr><td width='20'>";
    text += "</td><td class='bcBg'>";
    text += "<a class='bc' href='javascript:loadFullStoryFile(\"div\", \"bodyDiv\", \"" +
               "Home" +
               "\", \"" +
               "home.php" +  "\", true);' >" +
               "&nbsp;Home" + "</a>";
    for (var i = 0; i < breadCrumbs.length; i++)
    {
        text += "&nbsp;|&nbsp;";
        text += "<a class='bc' href='javascript:loadFullStoryFile(\"div\", \"mainContent\", \"" +
               breadCrumbs[i].title +
               "\", \"" +
               breadCrumbs[i].url +  "\", true);' >" +
               breadCrumbs[i].title + "</a>";
     }

     text += "</td></tr>" + "</table>";
     if (bcDiv != null)
        bcDiv.innerHTML = text;

}

function closeMenu()
{
    if (activeButton != null)
    {
        resetButton(activeButton);
        activeButton = null;
    }
}