function initRollover (menuItemAmount) {
  if (document.getElementById || document.all) {
    for (var i = 1; i < (menuItemAmount + 1); i++) {
      eval ('menuItem' + i + 'Active = new Image ()'); 
      eval ('menuItem' + i + 'Active.src = document.images.rolloverImg' + i + '.src');
      eval ('menuItem' + i + 'Passive = new Image ()'); 
      eval ('menuItem' + i + 'Passive.src = document.images.menuItem' + i + '.src');
    }
    menuInitialized = true;
  }
}


function initRolloverSub (subMenuItemAmount) {
  if (document.getElementById || document.all) {
    for (var i = 1; i < (subMenuItemAmount + 1); i++) {
      eval ('subMenuItem' + i + 'Active = new Image ()'); 
      eval ('subMenuItem' + i + 'Active.src = document.images.subRolloverImg' + i + '.src');
      eval ('subMenuItem' + i + 'Passive = new Image ()'); 
      eval ('subMenuItem' + i + 'Passive.src = document.images.subMenuItem' + i + '.src');
    }
    subMenuInitialized = true;
  }
}


function rolloverActive (imgNr) {
  if (menuInitialized && imgNr != currentSection) eval ('document.images.menuItem' + imgNr + '.src = menuItem' + imgNr + 'Active.src');
}


function rolloverPassive (imgNr) {
  if (menuInitialized && imgNr != currentSection) eval ('document.images.menuItem' + imgNr + '.src = menuItem' + imgNr + 'Passive.src');
}


function subRolloverActive (imgNr) {
  if (subMenuInitialized && imgNr != currentSubsection) eval ('document.images.subMenuItem' + imgNr + '.src = subMenuItem' + imgNr + 'Active.src');
}


function subRolloverPassive (imgNr) {
  if (subMenuInitialized && imgNr != currentSubsection) eval ('document.images.subMenuItem' + imgNr + '.src = subMenuItem' + imgNr + 'Passive.src');
}


function urlDropdown (el) {
  if (el.options[el.selectedIndex].value == '') el.selectedIndex = 0;
}

function checkFormValue (el) {
  if (el.options[el.selectedIndex].value == '') return false;
  else return true;
}

function submitUrl (formName) {
  for (var i = 0; i < formName.elements.length; i++) {
    if (formName.elements[i].type == 'select') el = formName.elements[i];
  }
  if (el.options[el.selectedIndex].value != '') location.href = el.options[el.selectedIndex].value;
}

var menuInitialized = false; 
var subMenuInitialized = false;
var globalEl;