var menuItems = new Array();

// show/hide menu sublevel
function toggle(divID) {
  // menu element to toggle
  i = document.getElementById(divID);
  // plus/minus element - assuming this is divID suffixed by "pm"
  i2 = document.getElementById(divID+'pm');
  if (i.className=='open') {
    i.className='closed';
    i2.innerHTML = '+';
  } else if (i.className=='open selected') {
    i.className='closed selected';
    i2.innerHTML = '+';
  } else if (i.className=='closed selected') {
    i.className='open selected';
    i2.innerHTML = '-';
  } else {
    // was 'closed'
    i.className="open";
    i2.innerHTML = '-';
  }
  refreshMenu();
  return false;
}

// refresh the menu (workaround for IE6 rendering bug)
function refreshMenu() {
  for(j=0; j<menuItems.length; j++) {
    i = document.getElementById(menuItems[j]);
    i.className = i.className;
  }
}

// initialize menu item
function init(divID) {
  // menu element to toggle
  i = document.getElementById(divID);
  // plus/minus element - assuming this is divID suffixed by "pm"
  i2 = document.getElementById(divID+'pm');
  // set onclick event handler
  i2.onclick=function() { return toggle(divID); };
  // set plus/minus element content to plus or minus
  if (i.className=='open' || i.className=='open selected') {
    i2.innerHTML = '-';
  } else {
    i2.innerHTML = '+';
  }
  // add to menu item list
  menuItems[menuItems.length] = divID;
}


//Handles the menu for dnenergi
function toggleMenu(prefix, rootID, toggle) {

  var toggle_button = document.getElementById(toggle);
  var button = document.getElementById(prefix + rootID + "_0");
  var counter = 0;
  
  if(toggle_button.className == 'open') {
    toggle_button.className = 'close';
  }
  else {
    toggle_button.className = 'open';
  }

  do {
    if(button.style.display != "block") {
      button.style.display = "block";
    }
    else {
      button.style.display = "none";      
    }
    
    counter ++;
    button = document.getElementById(prefix + rootID + "_" + counter);
  } while (button != null);
}