function num2english()
{
    var retStr='';
    var str='';
    var place=0;
    var modBox=0;
    var hundredsInt=0;
    var tensInt=0;
    var onesInt=0;
        var placeName = [' thousand',' million',' billion',' trillion',' quadrillion'];
    var tens = ['twenty','thirty','forty','fifty','sixty','seventy','eighty','ninety'];
    var teens = ['ten','eleven','twelve','thirteen','fourteen','fifteen','sixteen','seventeen','eightteen','nineteen'];
    var ones = ['','one','two','three','four','five','six','seven','eight','nine'];

    var num = parseInt(prompt('Enter a number less than 1 qintillion to translate','')); //get user input

    do{
        modBox = (num % 1000);

        if(modBox)
        {
            if(place) retStr = ', ' + retStr;

            hundredsInt = Math.floor(modBox/100);
            onesInt = modBox % 10;
            tensInt = ((modBox - (hundredsInt * 100)) - onesInt) / 10;

            switch(tensInt)
            {
                case 0:
                    if(onesInt) str = ones[onesInt];
                    break;
                case 1:
                    str = teens[onesInt];
                    break;
                default:
                    str = tens[tensInt - 2];
                    if(onesInt)
                    {
                        str = str + '-' + ones[onesInt];
                    }
            }
                        if(place)
            {
                str = hundredsInt ? ones[hundredsInt] + ' hundred ' + str + placeName[place - 1] : str + placeName[place - 1];
            }else{
                if(hundredsInt)
                {
                    str = ones[hundredsInt] + ' hundred ' + str;
                }
            }

        }

        retStr = str + retStr;

        str = '';

        place++;

        num = Math.floor(num/1000);

    }while(num);

    alert(retStr);
}

num2english();