uno=null; due=null; tre=null; quattro=null; cinque=null; sei=null; sette=null; otto=null; nove=null; dieci=null; undici=null; dodici=null; tredici=null; quattordici=null; quindici=null; sedici=null;

function openUno(){
if ((uno==null)||(uno.closed)){
uno = window.open("","uno","width=640,height=600,status=no,scrollbars=no")
} else {uno.focus();}
}

function openDue(){
if ((due==null)||(due.closed)){
due = window.open("","due","width=640,height=600,status=no,scrollbars=no")
} else {due.focus();}
}

function openTre(){
if ((tre==null)||(tre.closed)){
tre = window.open("","tre","width=640,height=600,status=no,scrollbars=no")
} else {tre.focus();}
}

function openQuattro(){
if ((quattro==null)||(quattro.closed)){
quattro = window.open("","quattro","width=640,height=600,status=no,scrollbars=no")
} else {quattro.focus();}
}

function openCinque(){
if ((cinque==null)||(cinque.closed)){
cinque = window.open("","cinque","width=640,height=600,status=no,scrollbars=no")
} else {cinque.focus();}
}

function openSei(){
if ((sei==null)||(sei.closed)){
sei = window.open("","sei","width=640,height=600,status=no,scrollbars=no")
} else {sei.focus();}
}

function openSette(){
if ((sette==null)||(sette.closed)){
sette = window.open("","sette","width=640,height=600,status=no,scrollbars=no")
} else {sette.focus();}
}

function openOtto(){
if ((otto==null)||(otto.closed)){
otto = window.open("","otto","width=640,height=600,status=no,scrollbars=no")
} else {otto.focus();}
}
function openNove(){
if ((nove==null)||(nove.closed)){
nove = window.open("","nove","width=640,height=600,status=no,scrollbars=no")
} else {nove.focus();}
}

function openDieci(){
if ((dieci==null)||(dieci.closed)){
dieci = window.open("","dieci","width=640,height=600,status=no,scrollbars=no")
} else {dieci.focus();}
}

function openUndici(){
if ((undici==null)||(undici.closed)){
undici = window.open("","undici","width=640,height=600,status=no,scrollbars=no")
} else {undici.focus();}
}

function openDodici(){
if ((dodici==null)||(dodici.closed)){
dodici = window.open("","dodici","width=640,height=600,status=no,scrollbars=no")
} else {dodici.focus();}
}
function openTredici(){
if ((tredici==null)||(tredici.closed)){
tredici = window.open("","tredici","width=640,height=600,status=no,scrollbars=no")
} else {tredici.focus();}
}

function openQuattordici(){
if ((quattordici==null)||(quattordici.closed)){
quattordici = window.open("","quattordici","width=640,height=600,status=no,scrollbars=no")
} else {quattordici.focus();}
}

function openQuindici(){
if ((quindici==null)||(quindici.closed)){
quindici = window.open("","quindici","width=640,height=600,status=no,scrollbars=no")
} else {quindici.focus();}
}

function openSedici(){
if ((sedici==null)||(sedici.closed)){
sedici = window.open("","sedici","width=640,height=600,status=no,scrollbars=no")
} else {sedici.focus();}
}