var fenpop=0;
function popupcentree(page,largeur,hauteur,options)
{
    var wh=screen.height;
    var ww=screen.width;
    var top=(wh-hauteur)/2;
    var left=(ww-largeur)/2;
    if(options==undefined)
    {
        options="status=no, location=no";
    }
	fenpop=window.open(page,"_blank","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}