var LO=1, HI=2, AC=3, YES=0, NO=0;	  
var documentLayers = AC;
var allImages = new Array();
	  
function addImageSet3(id,lo,hi,ac)
{
	newImages = new Array(4);
	newImages[0] = id;
	newImages[1] = new Image().src = lo;
	newImages[2] = new Image().src = hi;
	newImages[3] = new Image().src = ac;
				 
	// allImages.push(newImages);
	allImages[allImages.length] = newImages;
}

function addImageSet2(id,lo,hi)
{
	newImages = new Array(4);
	newImages[0] = id;
	newImages[1] = new Image().src = lo;
	newImages[2] = new Image().src = hi;
				 
	// allImages.push(newImages);
	allImages[allImages.length] = newImages;
}

function findImage(id)
{
	var i = document.images.length;
  while(i>0)
	{
		i--;
		if(document.images[i].name == id) {
			return document.images[i];
		}
	}
	return null;
}
  
function findImageSet(id)
{
	var i = allImages.length;
	while(i>0)
	{
		i--;
		if(allImages[i][0] == id) {
			return allImages[i];
		}
	}
	return null;
}

function setImageHi(id)
{
	changeImage(id,HI);	
}
	  
function setImageLo(id)
{
	changeImage(id,LO);
}

function setImageAc(id)
{
	changeImage(id,AC)
}
	  
function changeImage(id,mode)
{
	img = findImage(id);
	imgset = findImageSet(id);
	img.src = imgset[mode];
}