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');	
	}