var winF;
function ouvre_fenetre(url,largeur,hauteur){
	mX = 0;
	mY = 0;
	if(winF){
		winF.close();
	}
	winF = window.open(url,'winF','width='+largeur+',height='+hauteur+',scrollbars=no,status=0,menubar=no,location=0,toolbar=no,resizable=yes,top='+mX+',left='+mY);
	
}