/*
EASYMENU - XHTML/CSS/DHTML Semantically correct drop down menu
Author:  Sam Hampton-Smith
Site:    http://www.easymenu.co.uk
*/
   // Load up the stylesheet for the menus. This code is here rather than in the html
   // document to allow for non-javascript browsers to render a seperately styled non-
   // interactive list rather than the DHTML menu
        // document.write("<link rel='stylesheet' href='cssmenu.css' type='text/css' />");
   var currentMenu = null;
   var lastMenuStarter = null;
   var mytimer = null;
   var timerOn = false;
   var opera = window.opera ? true : false;

   if (!document.getElementById)
      document.getElementById = function() { return null; }

   function initialiseDummy(dummy, root) {
      dummy.onmouseover = function() {
         containingMenu = this.parentNode.parentNode;
         for (var x=0;x<containingMenu.childNodes.length;x++) {
            if (containingMenu.childNodes[x].nodeName.toUpperCase()=="LI") {
               if (containingMenu.childNodes[x].getElementsByTagName("ul").length>0) {
                  containingMenu.childNodes[x].getElementsByTagName("UL").item(0).style.visibility = 'hidden';
               }
            }
         }
      }
      dummy.onfocus = function() {
         dummy.onmouseover();
      }
   }

   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";
               hideAllMenus(currentMenu, root);

            }
            if (this.parentNode.parentNode==root) {
               while (currentMenu.parentNode.parentNode!=root) {
                  currentMenu.parentNode.parentNode.style.visibility = "hidden";
                  currentMenu = currentMenu.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() {
//       currentMenu.style.visibility="hidden";
      }

      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();
      }
      menu.onblur = function() {
         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) {
 timerOn = false;
      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;
      }
   }

   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);
         }
         else {
            initialiseDummy(elementItem.childNodes[x].getElementsByTagName("A").item(0), root);
         }
      }
   }
}
function hideAllMenus(elementItem, root) {
   for (var x=0;x<elementItem.childNodes.length;x++) {
      if (elementItem.childNodes[x].nodeName.toUpperCase()=="LI") {
         if (elementItem.childNodes[x].getElementsByTagName("ul").length>0) {
            elementItem.childNodes[x].getElementsByTagName("UL").item(0).style.visibility = 'hidden';
            hideAllMenus(elementItem.childNodes[x].getElementsByTagName("UL").item(0), root);
         }
      }
   }
}