var menuLength = 6;
var menuTimerId = 0;
var menuCurrent = 0;

function menuHover(id)
{
  if (!document.getElementById)
    return;

  window.clearTimeout(menuTimerId);
  menuTimerId = 0;
  menuCurrent = id;

  _menuReset(false);

  document.getElementById('mainmenu_' + id + '_l').className = 'mainMenuHoverLeft';
  document.getElementById('mainmenu_' + id + '_c').className = 'mainMenuHoverCenter';
  document.getElementById('mainmenu_' + id + '_r').className = 'mainMenuHoverRight';

  initSubmenu(id);
} // end func menuHover


function menuReset()
{
  if (menuTimerId != 0)
    return;

  menuCurrent = menuSelected;

  menuTimerId = window.setTimeout('_menuReset(1)', 250);
} // end func menuReset


function _menuReset(restoreDefault)
{
  var i, obj;

  if (!document.getElementById)
    return;

  for (i = 0; i < menuLength; ++i) {
    if ((obj = document.getElementById('submenu' + i)) && i != menuCurrent)
      obj.style.display = 'none';

    if (i == menuSelected) {
      if (restoreDefault && (obj = document.getElementById('submenu' + i)))
        obj.style.display = 'block';
      continue;
    }

    document.getElementById('mainmenu_' + i + '_l').className = 'mainMenuDefaultLeft';
    document.getElementById('mainmenu_' + i + '_c').className = 'mainMenuDefaultCenter';
    document.getElementById('mainmenu_' + i + '_r').className = 'mainMenuDefaultRight';
  }

  menuTimerId = 0;
} // end func _menuReset


function initSubmenu(id)
{
  var submenu, offset, width, avWidth;

  if (!document.getElementById)
    return;

  if (submenu = document.getElementById('submenu' + id)) {
    if (offset = document.getElementById('mainmenu_' + id + '_c').offsetLeft) {
      if (width = document.getElementById('submenu_' + id).offsetWidth) {
        avWidth = document.getElementsByTagName('body')[0].clientWidth;
      } else {
        submenu.style.display = 'block';

        width   = document.getElementById('submenu_' + id).offsetWidth;
        avWidth = document.getElementsByTagName('body')[0].clientWidth;
      }

      if (offset + width > avWidth)
        offset = avWidth - width; 
      if (offset < 0)
        offset = 0;

      submenu.style.marginLeft = offset + 'px';
    }
  }

} // end func initSubmenu


function navigationHover(level, id, mode)
{
  var obj;

  if (!document.getElementById)
    return;
  if (!(obj = document.getElementById('mainNavigation' + level + '_' + id)))
    return;

  obj.src = '../img/' + (mode ? 'dot.blue' : 'white') + '.gif';
} // end func navigationHover


function MM_preloadImages()
{ //v3.0
  var d, i, j, a;

  d = document;
  if (d.images) {
    if (!d.MM_p)
      d.MM_p = new Array();

    j = d.MM_p.length;
    a = MM_preloadImages.arguments;

    for (i = 0; i < a.length; ++i) {
      if (a[i].indexOf("#") != 0) {
        d.MM_p[j] = new Image;
        d.MM_p[j++].src = a[i];
      }
    }
  }
}


function MM_swapImgRestore()
{ //v3.0
  var i, x, a;
  a = document.MM_sr;
  for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; ++i)
    x.src = x.oSrc;
}


function MM_findObj(n, d)
{ //v4.01
  var p, i, x;

  if (!d)
    d = document;
  if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
    d = parent.frames[n.substring(p + 1)].document;
    n = n.substring(0, p);
  }
  if (!(x = d[n]) && d.all)
    x = d.all[n];
  for (i = 0; !x && i < d.forms.length; ++i)
    x = d.forms[i][n];
  for (i = 0; !x&&d.layers && i < d.layers.length; ++i)
    x = MM_findObj(n, d.layers[i].document);
  if (!x && d.getElementById)
    x = d.getElementById(n);

  return x;
}


function MM_swapImage()
{ //v3.0
  var i, j, x, a;

  j = 0
  a = MM_swapImage.arguments
  document.MM_sr = new Array;
  for (i = 0; i < (a.length - 2); i += 3) {
    if ((x = MM_findObj(a[i])) != null) {
      document.MM_sr[j++] = x;
      if (!x.oSrc)
        x.oSrc = x.src;
      x.src = a[i+2];
    }
  }
}