function showhide(div_num)
{ 

	if (document.all)
	{ 
		//IS IE 4 or 5 (or 6 beta)
		divEl = document.all["div" + div_num];
		titleEl = document.all["title" + div_num];
	} 
	if (document.layers)
	{ 
		//IS NETSCAPE 4 or below 
		divEl = document.layers["div" + div_num]; 
		titleEl = document.layers["title" + div_num]; 
	} 
	if (document.getElementById &&!document.all) { 
		divEl = document.getElementById("div" + div_num);
		titleEl = document.getElementById("title" + div_num);
	}

	if (divEl.style.display == 'block')
	{ 
		state = 'none';
		titleMsg = "Show"; 
	} 
	else
	{ 
		state = 'block';
		titleMsg = "Hide";  
	}

	titleEl.title = titleMsg;
	divEl.style.display = state;
}