function PopupCentrer(page,largeur,hauteur,options) {
        var x = window.screenX;
        if (isFinite(x)==false){ x=0;}
        var y = window.screenY;
        if (isFinite(y)==false){ y=0;}
        var H = window.outerHeight;
        if (isFinite(H)==false){ H=screen.height;}
        var L = window.outerWidth;
        if (isFinite(L)==false){ L=screen.width;}
        var left = Math.round(x+((L-largeur)/2));
        var top = Math.round(y+((H-hauteur)/2));
        win =  window.open(page,"popup","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
        win.focus();
}