function changement(id1)
{
if(isNaN(document.getElementById(id1).value))
	{
	document.getElementById(id1+'_2').value="0"
	}
else
	{
	document.getElementById(id1+'_2').value=document.getElementById(id1).value
	}
}

function affiche_legende()
{
	document.getElementById("legende_masquee").style.visibility="hidden";
	document.getElementById("legende").style.visibility="visible";
}

function cache_legende()
{
	document.getElementById("legende_masquee").style.visibility="visible";
	document.getElementById("legende").style.visibility="hidden";
}

function affiche_formulaire()
{
	var type=document.getElementById('type').options[document.getElementById('type').selectedIndex].value;
	document.getElementById("musique").style.display="none";
	document.getElementById("folklore").style.display="none";
	document.getElementById("artisanat").style.display="none";
	document.getElementById(type).style.display="block";
}