var nava = (document.layers);
var dom = (document.getElementById);
var iex = (document.all);



function kill ()
{
	document.getElementById('creation_1').style.visibility = "hidden";
	document.getElementById('ff_1').style.visibility = "hidden";
	document.getElementById('ff_2').style.visibility = "hidden";
}

function view (calque)
{
	document.getElementById(calque).style.visibility = "visible";
}

function hide (calque)
{
	document.getElementById(calque).style.visibility = "hidden";
}