/*
===================================================
XHTML/CSS/DHTML Semantically correct drop down menu 
===================================================
Author: Sam Hampton-Smith
Site: http://www.hampton-smith.com
*/
 
if (navigator.appName!="Netscape" || parseFloat(navigator.appVersion) >= 5) {
  document.write("<link rel='stylesheet' href='cssmenu.css' type='text/css' />");
}

var currentMenu = null;
var mytimer = null;
var timerOn = false;
var opera = window.opera ? true : false;

if (!document.getElementById)
  document.getElementById = function() { return null; }
  
function initialiseMenu(menu, starter, root) {
  var leftstarter = false;
  
  if (menu == null || starter == null) return;
    currentMenu = menu;
  
  starter.onmouseover = function() {
    if (currentMenu) {
      if (this.parentNode.parentNode!=currentMenu) {
        currentMenu.style.visibility = "hidden";
      }
      if (this.parentNode.parentNode==root) {
        tempCurrentMenu = currentMenu
        while (tempCurrentMenu.parentNode.parentNode!=root) {
          tempCurrentMenu.parentNode.parentNode.style.visibility = "hidden";
          tempCurrentMenu = tempCurrentMenu.parentNode.parentNode;
        }
      }
      currentMenu = null;
      this.showMenu();
    }
  }
  
  menu.onmouseover = function() {
    if (currentMenu) {
      currentMenu = null;
      this.showMenu();
    }
  }  
  
  starter.showMenu = function() {
    if (!opera) {
      if (this.parentNode.parentNode==root) {
        menu.style.left = this.offsetLeft + "px";
        menu.style.top = this.offsetTop + this.offsetHeight + "px";
        if (menu.offsetWidth < this.offsetWidth) menu.style.width = this.offsetWidth;
      }
      else {
         menu.style.left = this.offsetLeft + this.offsetWidth + "px";
         menu.style.top = this.offsetTop + "px";
      }
    }
    else {
      var rootOffset = root.offsetLeft;
      if (this.parentNode.parentNode==root) {
        menu.style.left = this.offsetLeft - rootOffset + "px";
        menu.style.width = this.offsetWidth;
        menu.style.top = this.offsetHeight + "px";
      }
      else {
         menu.style.left = this.offsetWidth - rootOffset + "px";
         menu.style.top = this.offsetTop + "px"; //menu.style.top - menu.style.offsetHeight + "px";
      }
    }
    menu.style.visibility = "visible";
    currentMenu = menu;
  }

  starter.onfocus   = function() {
    starter.onmouseover();
  }
  
  menu.onfocus   = function() {
  }

  menu.showMenu = function() {
    menu.style.visibility = "visible";
    currentMenu = menu;
    stopTime();
  }

  menu.hideMenu = function()  {
    if (!timerOn) {
      mytimer = setInterval("killMenu('" + this.id + "', '" + root.id + "');", 2000);
      timerOn = true;
      for (var x=0;x<menu.childNodes.length;x++) {
        if (menu.childNodes[x].nodeName=="LI") {
          if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
            menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
            menuItem.style.visibility = "hidden";
          }
        }
      }
    }
  }

  menu.onmouseout = function(event) {
    this.hideMenu();
  }

  starter.onmouseout = function() {
    for (var x=0;x<menu.childNodes.length;x++) {
      if (menu.childNodes[x].nodeName=="LI") {
        if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
          menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
          menuItem.style.visibility = "hidden";
        }
      }
    }
    menu.style.visibility = "hidden";
  }
}

function killMenu(menu, root) {
  var menu = document.getElementById(menu);
  var root = document.getElementById(root);
  menu.style.visibility = "hidden";
  for (var x=0;x<menu.childNodes.length;x++) {
    if (menu.childNodes[x].nodeName=="LI") {
      if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
        menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
        menuItem.style.visibility = "hidden";
      }
    }
  }
  while (menu.parentNode.parentNode!=root) {
    menu.parentNode.parentNode.style.visibility = "hidden";
    menu = menu.parentNode.parentNode;
  }
  stopTime();
}

function stopTime() {
  if (mytimer) {
    clearInterval(mytimer);
    mytimer = null;
    timerOn = false;
  }
} 

if (navigator.appName!="Netscape" || parseFloat(navigator.appVersion) >= 5) {
  window.onload = function() {
    var root = document.getElementById("menuList");
    var rootOffset = root.offsetLeft;
    getMenus(root, root);
  }
}

function getMenus(elementItem, root) {
  var selectedItem;
  var menuStarter;
  var menuItem;
  for (var x=0;x<elementItem.childNodes.length;x++) {
    if (elementItem.childNodes[x].nodeName.toUpperCase()=="LI") {
      if (elementItem.childNodes[x].getElementsByTagName("UL").length>0) {
        menuStarter = elementItem.childNodes[x].getElementsByTagName("A").item(0);
        menuItem = elementItem.childNodes[x].getElementsByTagName("UL").item(0);
        getMenus(menuItem, root);
        initialiseMenu(menuItem, menuStarter, root);
      }
    }
  }
}