function init()
{
	var toggle_c = document.getElementById('features');
	toggle_c.onclick = function() { hidden(); return false; };
	
	var toggle_c = document.getElementById('features2');
	toggle_c.onclick = function() { hidden(); return false; };
	
	var toggle_c = document.getElementById('features3');
	toggle_c.onclick = function() { hidden(); return false; };
}

function hidden()
{
	var div_n = document.getElementById('hidden');
	div_n.style.display = (div_n.style.display == 'none' ? 'block' : 'none');
	
	var div_n = document.getElementById('hidden2');
	div_n.style.display = (div_n.style.display == 'none' ? 'block' : 'none');
	
	var div_n = document.getElementById('hidden3');
	div_n.style.display = (div_n.style.display == 'none' ? 'block' : 'none');
	
}
window.onload = function() { init(); }