/*
 * dropdown menu
 * =============
 * based on code from:
 * Dave Lindquist (http://www.gazingus.org)
 * http://www.jessett.com
 */


var currentActuator = null;
var currentMenu = null;
var timerID = null;
var timecount = 500;

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

function initializeMenu(barType, menuId, actuatorId)
{
  var menu = document.getElementById(menuId);
  var actuator = document.getElementById(actuatorId);

  if (menu == null || actuator == null) return;

  menu.barType = barType;

  if (menu.barType == "top")
  {
    menu.style.left = actuator.offsetLeft + "px";
    menu.style.top = actuator.offsetTop + actuator.offsetHeight + "px";
  }
  else
  {
    menu.style.width = "150px";
  }

  menu.onmouseover = function()
  {
    if (currentMenu.barType == "left")
    {
      currentActuator.style.borderTop = "1px solid #800080";
      currentActuator.style.borderBottom = "1px solid #800080";
      currentActuator.style.backgroundColor = "#FFFFFF";
      currentActuator.style.padding = "1px 5px 0px 5px";
    }
    stopTimer();
  }

  menu.onmouseout = function()
  {
    startTimer();
  }

  actuator.onmouseover = function()
  {
    hideMenu();
    this.className = "hand";
    this.showMenu();
    stopTimer();
  }

  actuator.onmouseout = function()
  {
    startTimer();
  }

  actuator.showMenu = function()
  {
    if (menu.barType == "left")
    {
      actuator.style.borderTop = "1px solid #800080";
      actuator.style.borderBottom = "1px solid #800080";
      actuator.style.backgroundColor = "#FFFFFF";
      actuator.style.padding = "1px 5px 0px 5px";
      menu.style.left = getLeft(actuator) + actuator.offsetWidth + "px";
      menu.style.top = getTop(actuator) + "px";
    }
    menu.style.visibility = "visible";
    currentActuator = actuator;
    currentMenu = menu;
  }
}

function hideMenu()
{
  if (currentMenu)
  {
    if (currentMenu.barType == "left")
    {
      currentActuator.style.border = "0px";
      currentActuator.style.borderTop = "1px solid #EEEEEE";
      currentActuator.style.backgroundColor = "#FFFFFF";
      currentActuator.style.padding = "1px 5px";
    }
    currentMenu.style.visibility = "hidden";
  }
}

function startTimer()
{
	timerID = setTimeout("hideMenu();", timecount);
}

function stopTimer()
{
  if (timerID)
  {
    clearTimeout(timerID);
    timerID = null;
  }
}

function getLeft(obj)
{
  if (obj == null) return 0;
  return getLeft(obj.offsetParent) + obj.offsetLeft;
}

function getTop(obj)
{
  if (obj == null) return 0;
  return getTop(obj.offsetParent) + obj.offsetTop;
}