var ie4 = false;

if (document.all)
{
	ie4 = true;
}

function switchImage(ref, img1, img2)
{
	if (typeof ref.imgState == 'undefined') {
		ref.imgState = 2;
		ref.src = img2;
	}
	else if (ref.imgState == 1) {
		ref.imgState = 2;
		ref.src = img2;
	}
	else {
		ref.imgState = 1;
		ref.src = img1;
	}
}

function toggleShade(ref)
{
	state = ref.childNodes[1].style.display;
	
	if (typeof state == 'undefined') {
		ref.childNodes[1].style.display = 'block';
	}
	else if (state == 'block') {
		ref.childNodes[1].style.display = 'none';
	}
	else {
		ref.childNodes[1].style.display = 'block';
	}
}