function showhideWhy(which){
	var oLinkWhy = document.getElementById(which + "-link");
	var oDivWhy = document.getElementById(which);
	
	try{eval(prev_oLinkWhy);}
	catch(e){
		prev_oLinkWhy = document.getElementById(which + "-link");
		prev_oDivWhy = document.getElementById(which);
	}
	
	oLinkWhy.className = 'selected';
	oDivWhy.style.display = 'block';
	
	if(oLinkWhy != prev_oLinkWhy){
		prev_oLinkWhy.className = '';
		prev_oDivWhy.style.display = 'none';
		
		prev_oLinkWhy = document.getElementById(which + "-link");
		prev_oDivWhy = document.getElementById(which);
	}
}

function showhideSteps(which){
	var oLink = document.getElementById(which + "-link");
	var oDiv = document.getElementById(which);
	
	try{eval(prev_oLink);}
	catch(e){
		prev_oLink = document.getElementById(which + "-link");
		prev_oDiv = document.getElementById(which);
	}
	
	oLink.className = 'selected';
	oDiv.style.display = 'block';
	
	if(oLink != prev_oLink){
		prev_oLink.className = '';
		prev_oDiv.style.display = 'none';
		
		prev_oLink = document.getElementById(which + "-link");
		prev_oDiv = document.getElementById(which);
	}
}