showDiv = function(id)
{
//	var el = document.all? document.all[id]: document.getElementById? document.getElementById(id): null;
	var el = document.getElementById(id);
	if (el != null)
		el.style.display = 'block';
}
hideDiv = function(id)
{
//	var el = document.all? document.all[id]: document.getElementById? document.getElementById(id): null;
	var el = document.getElementById(id);
	if (el != null)
		el.style.display = 'none';
}