function Activate(imgName)
{
if (document.images) 
	{
	imgOn = eval(imgName + "on.src");
	document [imgName].src = imgOn;
	}
}

function Deactivate(imgName)
{
if (document.images) 
	{
	imgOff = eval(imgName + "off.src");
	document [imgName].src = imgOff;
	}
}

if (document.images)
	{       
	main01on = new Image(98,26); 
	main01on.src = "assets/hg-mb-01-r.gif";
	main02on = new Image(112,26); 
	main02on.src = "assets/hg-mb-02-r.gif";
	main03on = new Image(109,26); 
	main03on.src = "assets/hg-mb-03-r.gif";
	main04on = new Image(113,26); 
	main04on.src = "assets/hg-mb-04-r.gif";

	main01off = new Image(98,26); 
	main01off.src = "assets/hg-mb-01-n.gif";
	main02off = new Image(112,26); 
	main02off.src = "assets/hg-mb-02-n.gif";
	main03off = new Image(109,26); 
	main03off.src = "assets/hg-mb-03-n.gif";
	main04off = new Image(113,26); 
	main04off.src = "assets/hg-mb-04-n.gif";
}