// JavaScript Document
function Visible(Fond,Zone)
{
document.getElementById(Fond).style.visibility = 'visible';

if ( Zone == "Zone2" )
	document.getElementById(Zone).style.visibility = 'visible';
}

function Invisible(Fond,Zone)
{
document.getElementById(Fond).style.visibility = 'hidden';

if ( Zone == "Zone2" )
	document.getElementById(Zone).style.visibility = 'hidden';
}