function findObj(id)
{	
	var obj = null;
	
	if (document.getElementById)
		obj = document.getElementById(id);
	else if (document.all)
		obj = document.all[id];
	
	return obj;
}

function showHide(id)
{
	var obj = findObj("mn" + id);	
	
	if (obj)
	{
		var s = null;
		s = obj.style;
		
		// switch on/off the clicked block
		if (s.display == "none") s.display = "block";
		else if (s.display == "block") s.display = "none";

		// swich on/off the last selected block
		if (window.curOpenDiv)
		{
			if (window.curOpenDiv != obj)
			{
				s = window.curOpenDiv.style;
				if (s.display == "block") s.display = "none";
				window.curOpenDiv = obj;
			}
		}
		else
		{
			window.curOpenDiv = obj;
		}
	}
	
	return false;
}

function hideAll()
{
	return;
	
	var i = 0;
	var obj = null;
	var id = "";
	
	for (i = 2; i <= 4; i++)
	{
		id = "mn" + i;
		obj = findObj(id);
		
		if (obj) obj.style.display = "none";
	}
}