function toggleLayer(divID){
	var e;
	e = document.getElementById(divID);
	e.style.visibility = (e.style.visibility == 'visible' ? 'hidden' : 'visible');
	e.style.display = (e.style.display == 'block' ? 'none' : 'block');	
	}
	
function toggleLayer2(imgID){
	var f;
	f = document.getElementById(imgID);
	f.style.visibility = (f.style.visibility == 'visible' ? 'hidden' : 'visible');
	f.style.display = (f.style.display == 'inline' ? 'none' : 'inline');	
	}
	
function toggleLayer3(imgID2){
	var g;
	g = document.getElementById(imgID2);
	g.style.visibility = (g.style.visibility == 'visible' ? 'hidden' : 'visible');
	g.style.display = (g.style.display == 'inline' ? 'none' : 'inline');	
	}


if (document.images) {
	button_a = new Image
	button_a_roll = new Image
	button_b = new Image
	button_b_roll = new Image
	button_c = new Image
	button_c_roll = new Image


	button_a.src = "images/box1.jpg"
	button_a_roll.src = "images/box1_roll.jpg"
	button_b.src = "images/box2.jpg"
	button_b_roll.src = "images/box2_roll.jpg"
	button_c.src = "images/box3.jpg"
	button_c_roll.src = "images/box3_roll.jpg"

	}
	
	
else {
	button_a = ""
	button_a_roll = ""
	button_b = ""
	button_b_roll = ""
	button_c = ""
	button_c_roll = ""
	}