function toggle(id)
  {
  var ul = "ul_" + id;
  var img = "img_" + id;

  ulElement = document.getElementById(ul);
  imgElement = document.getElementById(img);
  if (ulElement)
    {
    if (ulElement.className == 'closed')
      {
      ulElement.className = "open";
      imgElement.src = "/img/open.gif";
      }
    else
  	  {
      ulElement.className = "closed";
      imgElement.src = "/img/closed.gif";
      }
    }
  }


function preview (src, alt)
  {
  var element = document.getElementById ('viewer');
  var image   = document.getElementById ('viewerImageId');

  element.style.display = 'inline';
  element.onclick = function ()
    {
    unpreview ();
    }

  image.src = src;
  image.alt = alt;



  return false;
  }

function unpreview ()
  {
  var element = document.getElementById ('viewer');
  var image   = document.getElementById ('viewerImageId');

  image.src = '/img/spacer.gif';
  element.style.display = 'none';

  return;
  }


function openMenu (id)
{
	var ul  = document.getElementById ('ul_'  + id);
	var img = document.getElementById ('img_' + id);

	ul.className = 'open';
	img.src='/img/open.gif';
}

function closeMenu (id)
{
	var ul  = document.getElementById ('ul_' + id);
	var img = document.getElementById ('img_' + id);


	ul.className = 'closed';
	img.src='/img/closed.gif';
}


function loadMenu(section)
{
	swapMenu (section == 'company',  'company');
	swapMenu (section == 'quality',  'quality');
	swapMenu (section == 'services', 'services');
}

function swapMenu (bOpen, id)
{
if (bOpen) openMenu (id);
else closeMenu (id);
}