function pp(page,nom,width,height,toolbar,scrollb,resizable){
    var winl = (screen.width - width) / 6; var wint = (screen.height- height) / 6;
    win = window.open(page,nom,'width='+width+',height='+height+',top='+wint+',left='+winl+',toolbar='+toolbar+',scrollbars='+scrollb+',resizable='+resizable+'')
    if(parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}