Программное обеспечение

Код:

<meta http-equiv = "content-type" content = "text/html; charset = Windows-1251">
<SCRIPT LANGUAGE="JavaScript">
function signs() {
var start = 1901, birthyear = document.zodiac.year.value, date=document.zodiac.date.value, month=document.zodiac.month.selectedIndex;

with (document.zodiac.sign){

if (month == 1 && date >=20 || month == 2 && date <=18) {value = "Водолей";}
if (month == 1 && date > 31) {value = "Ошибка!";}
if (month == 2 && date >=19 || month == 3 && date <=20) {value = "Рыбы";}
if (month == 2 && date > 29) {value = "Ошибка!";}
if (month == 3 && date >=21 || month == 4 && date <=19) {value = "Овен";}
if (month == 3 && date > 31) {value = "Ошибка!";}
if (month == 4 && date >=20 || month == 5 && date <=20) {value = "Телец";}
if (month == 4 && date > 30) {value = "Ошибка!";}
if (month == 5 && date >=21 || month == 6 && date <=21) {value = "Близнецы";}
if (month == 5 && date > 31) {value = "Ошибка!";}
if (month == 6 && date >=22 || month == 7 && date <=22) {value = "Рак";}
if (month == 6 && date > 30) {value = "Ошибка!";}
if (month == 7 && date >=23 || month == 8 && date <=22) {value = "Лев";}
if (month == 7 && date > 31) {value = "Ошибка!";}
if (month == 8 && date >=23 || month == 9 && date <=22) {value = "Дева";}
if (month == 8 && date > 31) {value = "Ошибка!";}
if (month == 9 && date >=23 || month == 10 && date <=22) {value = "Весы";}
if (month == 9 && date > 30) {value = "Ошибка!";}
if (month == 10 && date >=23 || month == 11 && date <=21) {value = "Скорпион";}
if (month == 10 && date > 31) {value = "Ошибка!";}
if (month == 11 && date >=22 || month == 12 && date <=21) {value = "Стрелец";}
if (month == 11 && date > 30) {value = "Ошибка!";}
if (month == 12 && date >=22 || month == 1 && date <=19) {value = "Козерог";}
if (month == 12 && date > 31) {value = "Ошибка!";}
}
x = (start - birthyear) % 12
with (document.zodiac.csign){
if (x == 1 || x == -11) {value = "Крыса";}
if (x == 0) {value = "Бык";}
if (x == 11 || x == -1) {value = "Тигр";}
if (x == 10 || x == -2) {value = "Кролик";}
if (x == 9 || x == -3) {value = "Дракон";}
if (x == 8 || x == -4) {value ="Змея";}
if (x == 7 || x == -5) {value = "Лошадь";}
if (x == 6 || x == -6) {value = "Овца";}
if (x == 5 || x == -7) {value = "Обезьяна";}
if (x == 4 || x == -8) {value = "Петух";}
if (x == 3 || x == -9) {value = "Собака";}
if (x == 2 || x == -10) {value = "Кабан";}
}}
</script>

<form name="zodiac">
<center>
<table bgcolor="#60d4ff" border="2" bordercolor="#000000" rules="none" cellspacing="0" cellpadding="4">
<tr><td><b><i>Year</i></b></td>
<td><div align="right"><input type="text" size="10" name="year" value="Год" onClick=value=""></div></td>
<td> </td>
<tr><td><b><i>Месяц</i></b></td>
<td><div align="right">
<select name="month">
<option value="x">Месяц</option>
<option value="1">Январь</option>
<option value="2">Февраль</option>
<option value="3">Март</option>
<option value="4">Апрель</option>
<option value="5">Май</option>
<option value="6">Июнь</option>
<option value="7">Июль</option>
<option value="8">Август</option>
<option value="9">Сентябрь</option>
<option value="10">Октябрь</option>
<option value="11">Ноябрь</option>
<option value="12">Декабрь</option>
</select></div></td>
<td> </td></tr>
<tr><td><b><i>День</i></b></td>
<td><div align="right"><input type="text" name="date" value="День" size="3" onClick=value=""></td>
<td><input type="button" value="Расчет" onClick="signs()"></div></td></tr>
<tr><td><b><i>Знак Зодиака:</i></b></td>
<td><div align="right"><input type="text" name="sign" size="12" value="" align="right"></div</td></tr>
<td> </td></tr>
<tr><td><b><i>Восточный календарь:</i></b></td>
<td><div align="right"><input type="text" name="csign" size="12"></div></td>
<td> </td></tr>
</table>
</center>
</form>