function keypressIsAlpha(e)
{
    var value = e.keyCode;
    window.status = e.keyCode;
    if (value >= 65 && value <= 90)
       return value;
    else
       return false;
}

function keypressIsPrintable(e) {
    return (e.keyCode >= 48);
}

function keypressIsNum(e)
{
    var value = e.keyCode - 96;
    if (value >= 0 && value <= 9)
       return value;
    else
    {
        var value2 = e.keyCode - 48;
        if (value2 >= 0 && value2 <= 9)
           return value2;
        else
           return false;
    }
}

function keypressIsSpecialKey(e)
{
    var value = e.keyCode;
    
    if (value <= 46)
       return true;
    else
       return false;
}

function keypressIsStop(e)
{
    if (document.all) var e = event;
   /* e.stopPropagation();
    e.preventDefault();*/
    return false;
}