function popup(adresse,target,largeur,hauteur,degauche,duhaut,status,varscroll,resize)
{
	if (target == "") { target = "new_window";}
	if (largeur == "") { largeur = "500";}
	if (hauteur == "") { hauteur = "400";}
	if (degauche == "") { degauche = "0";}
	if (duhaut == "") { duhaut = "0";}
	if (varscroll == "") { varscroll = "2";}
	if (resize == "") {  resize = ",resizable=yes";  } else { resize = ",resizable=no";}
	if (status == "") { status = "yes";}
	param = "width="+largeur+",height="+hauteur+",left="+degauche+",top="+duhaut+",status="+status+",toolbar=no,menubar=no,scrollbars="+varscroll+",location=no,directories=no"+resize;
	window.open(adresse,target,param);
}