// JavaScript Document

   var displayId = null;
   function select(id)
   {
      if (displayId != null)
         document.getElementById(displayId).style.display = "none";
      document.getElementById(id).style.display = "block";
      displayId = id;
   }

var activeMenuId = null;
var activeMenu = null;

function showMenu(evt, menuId)
{
   hideMenu()
   
   activeMenu = document.getElementById(menuId);
   activeMenu.style.display = "block";

   if (evt.stopPropagation)
      evt.stopPropagation();
   else
      evt.cancelBubble = true;
   document.body.onmouseover = hideMenu;
}

function isDescendant(ancestor, element)
{
   while (element != null && element != ancestor)
      element = element.parentNode;
   return element != null;
}

function hideMenu(evt)
{
   if (activeMenu != null)
   {
      if (evt == null)
         evt = event;
      var target = evt.target;
      if (target == null)
         target = evt.srcElement;

      if (!isDescendant(activeMenu,target))
      {
         activeMenu.style.display = "none";
         activeMenu = null;
      }
   }
}
function getPosition(elm){
    var pos = new Object();
    pos.x = 0;
    pos.y = 0;
    if (elm.offsetParent){
        while (elm.offsetParent){
            pos.x += elm.offsetLeft;
            pos.y += elm.offsetTop;
            elm = elm.offsetParent;
        }
    }
    else{
        if (elm.x){
            pos.x = elm.x;
            pos.y = elm.y;
        }
    }
    return pos;
}
function showMap() {
    var map = document.getElementById("map");
    if (map.style.display == "none") {
        var mapLink = document.getElementById("mapLink");
        var offset = getPosition(mapLink);
        var height = parseInt(map.style.height,10);
        map.style.left = offset.x + "px";
        map.style.top = (offset.y - height) + "px";
        map.style.display = "block";
    }
    else
        map.style.display = "none";
}