function affiche(machin)
{
	document.getElementById(machin).style.display='table-row-group';
}

function fermer(id)
{
	document.getElementById(id).style.display='none';
}

function form_eff_clic(id,txt)
{
	if (document.getElementById(id).value == txt)
	{
		document.getElementById(id).value = '';
	}
}