function show_hint(hintID, imageID){
	
	var browser = navigator.appName;
	
	if (browser == "Netscape"){		
  document.layers[imageID].visibility = "visible";
  document.layers[hintID].visibility = "visible";

	}

	else {
  document.all[imageID].style.visibility = "visible";
 	document.all[hintID].style.visibility = "visible";		
	}
			
}

function hide_hint(hintID, imageID){
	
	var browser = navigator.appName;
	
	if (browser == "Netscape"){		
	document.layers[imageID].visibility = "hidden";
	document.layers[hintID].visibility = "hidden";
	}
	
	else {
	document.all[imageID].style.visibility = "hidden";
	document.all[hintID].style.visibility = "hidden";
	}
}
