function pingTestOpen(IP){
iMyWidth  = window.screenX + (window.outerWidth/2) - (500/2);
iMyHeight = window.screenY + (window.outerHeight/2) - (300/2);
okno = window.open('/wz_ping.php?IP='+IP+'', 'wz_ping', 'width=500,height=300,left=' + iMyWidth + ',screenX=' + iMyWidth + ',top=' + iMyHeight + ',screenY=' + iMyHeight + '');
okno.focus();
}