// JavaScript Document
function switchImage(imgName, imgSrc) 
{
  if (document.images)
  {
    if (imgSrc != "none")
    {
      document.images[imgName].src = imgSrc;
    }
  }
}

function mouseOver(imgName)
{
	if (currentMode!=imgName)
	{
		switchImage(imgName, 'images/nav/nav'+imgName+'-over.gif');
	}
}

function mouseOut(imgName)
{
	if (currentMode!=imgName)
	{
		switchImage(imgName, 'images/nav/nav'+imgName+'.gif');
	}
}