function ouvre_popup(div_id){
	var top = "1000px";
	switch(div_id){
		case "popup01": top = "1010px";
			break;
		case "popup02": top = "1100px";
			break;
		case "popup03": top = "1072px";
			break;
	}
	document.getElementById(div_id).style.top = top;
	document.getElementById(div_id).style.display = "block";
}
function ferme_popup(div_id){
	document.getElementById(div_id).style.display = "none";
}