// JavaScript Document

function Browser() { 
  var ua, s, i; 
  this.isIE    = false;  
  this.isNS    = false;  
  this.version = null; 
  
  ua = navigator.userAgent; 
  
  s = "MSIE"; 
  if ((i = ua.indexOf(s)) >= 0) { 
    this.isIE = 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 NS 6.1. 
  
  s = "Gecko"; 
  if ((i = ua.indexOf(s)) >= 0) { 
    this.isNS = true; 
    this.version = 6.1; 
    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 (activeButton == null) 
    return; 
  
  if (browser.isIE) 
    el = window.event.srcElement; 
  else 
    el = (event.target.tagName ? event.target : event.target.parentNode); 
  
  if (el == activeButton) 
    return; 
  
  if (getContainerWith(el, "DIV", "menu") == null) { 
    resetButton(activeButton); 
    activeButton = null; 
  } 
} 
  
function buttonClick(event, menuId) { 
  var button; 
  
  if (browser.isIE) 
    button = window.event.srcElement; 
  else 
    button = event.currentTarget; 
  
  button.blur(); 
  
  if (button.menu == null) { 
    button.menu = document.getElementById(menuId); 
    menuInit(button.menu); 
  } 
  
  if (activeButton != null) 
    resetButton(activeButton); 
  
  if (button != activeButton) { 
    depressButton(button); 
    activeButton = button; 
  } 
  else 
    activeButton = null; 
  
  return false; 
} 
  
function buttonMouseover(event, menuId) { 
  var button; 
  
  if (browser.isIE) 
    button = window.event.srcElement; 
  else 
    button = event.currentTarget; 
  
  if (activeButton != null && activeButton != button) 
    buttonClick(event, menuId); 
} 
  
function depressButton(button) { 
  var x, y; 
  
  button.className += " menuButtonActive"; 
  
  x = getPageOffsetLeft(button); 
  y = getPageOffsetTop(button) + button.offsetHeight; 
  
  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"; 
} 
  
function resetButton(button) { 
  removeClassName(button, "menuButtonActive"); 
  
  if (button.menu != null) { 
    closeSubMenu(button.menu); 
    button.menu.style.visibility = "hidden"; 
  } 
} 
  

function menuMouseover(event) { 
  var menu; 
  if (browser.isIE) 
    menu = getContainerWith(window.event.srcElement, "DIV", "menu"); 
  else 
    menu = event.currentTarget; 
  
  if (menu.activeItem != null) 
    closeSubMenu(menu); 
} 
  
function menuItemMouseover(event, menuId) { 
  var item, menu, x, y; 
  if (browser.isIE) 
    item = getContainerWith(window.event.srcElement, "A", "menuItem"); 
  else 
    item = event.currentTarget; 
  menu = getContainerWith(item, "DIV", "menu"); 
  
  if (menu.activeItem != null) 
    closeSubMenu(menu); 
  menu.activeItem = item; 
  
  item.className += " menuItemHighlight"; 
  
  if (item.subMenu == null) { 
    item.subMenu = document.getElementById(menuId); 
    menuInit(item.subMenu); 
  } 
  
  x = getPageOffsetLeft(item) + item.offsetWidth; 
  y = getPageOffsetTop(item); 
  
  var maxX, maxY; 
  
  if (browser.isNS) { 
    maxX = window.scrollX + window.innerWidth; 
    maxY = window.scrollY + window.innerHeight; 
  } 
  if (browser.isIE && browser.version < 6) { 
    maxX = document.body.scrollLeft + document.body.clientWidth; 
    maxY = document.body.scrollTop  + document.body.clientHeight; 
  } 
  if (browser.isIE && browser.version >= 6) { 
    maxX = document.documentElement.scrollLeft + document.documentElement.clientWidth; 
    maxY = document.documentElement.scrollTop  + document.documentElement.clientHeight; 
  } 
  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)); 
  
  item.subMenu.style.left = x + "px"; 
  item.subMenu.style.top  = y + "px"; 
  item.subMenu.style.visibility = "visible"; 
  
  if (browser.isIE) 
    window.event.cancelBubble = true; 
  else 
    event.stopPropagation(); 
} 
  
function closeSubMenu(menu) { 
  if (menu == null || menu.activeItem == null) 
    return; 
  
  if (menu.activeItem.subMenu != null) { 
    closeSubMenu(menu.activeItem.subMenu); 
    menu.activeItem.subMenu.style.visibility = "hidden"; 
    menu.activeItem.subMenu = null; 
  } 
  removeClassName(menu.activeItem, "menuItemHighlight"); 
  menu.activeItem = null; 
} 
  
function menuInit(menu) { 
  var itemList, spanList 
  var textEl, arrowEl; 
  var itemWidth; 
  var w, dw; 
  var i, j; 
  
  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"; 
      } 
  } 
  
  itemList = menu.getElementsByTagName("A"); 
  if (itemList.length > 0) 
    itemWidth = itemList[0].offsetWidth; 
  else 
    return; 
  
  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"; 
  } 
  
  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"; 
  } 
} 
  
function getContainerWith(node, tagName, className) { 
  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; 
  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; 
  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; 
  x = el.offsetLeft; 
  if (el.offsetParent != null) 
    x += getPageOffsetLeft(el.offsetParent); 
  
  return x; 
} 
  
function getPageOffsetTop(el) { 
  var y; 
  y = el.offsetTop; 
  if (el.offsetParent != null) 
    y += getPageOffsetTop(el.offsetParent); 
  
  return y; 
}