function popup(chemin,nom_fenetre,proprietes)
{
	window.open(chemin,nom_fenetre,proprietes);
}

// Met a jour la fenetre qui ouvre le pop up
function update_opener()
{
	var txt=window.opener.document.location.href;
	param=txt.indexOf('?');
	if(param==-1)
	{
		window.opener.location=window.opener.document.location.href + '?alea='+Math.random();
	}
	else
	{
		window.opener.location=window.opener.document.location.href + '&alea='+Math.random();
	}
}