// JavaScript Document
function hideSec() { 
	document.getElementById('sec1').style.visibility = "hidden";
	document.getElementById('sec1').style.height = 0;
	document.getElementById('sec2').style.visibility = "hidden";
	document.getElementById('sec2').style.height = 0;
	document.getElementById('sec3').style.visibility = "hidden";
	document.getElementById('sec3').style.height = 0;
	document.getElementById('sec4').style.visibility = "hidden";
	document.getElementById('sec4').style.height = 0;
	document.getElementById('sec5').style.visibility = "hidden";
	document.getElementById('sec5').style.height = 0;
}
function showSec(n) { 
	hideSec(); 
	document.getElementById('sec' + n).style.visibility = "visible"; 
	document.getElementById('sec' + n).style.height = "100%"; 
}