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маленький математический скрипт


Nekromancer
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Помогите пожалуйста.. всё работает норм, и вычисляет как надо, но в последний imput выводит не сумму 2х чисел а просто стыкует цифры будто они строчные значения...

как это решить?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Расчёт бонуса</title>

</head>
<body style="margin: 0; padding: 0;">
<form style="margin: 0 0 0 15px;">
Минимальное значение:<br/>
<input type="text" size="2" value="0" name="min" /><br/>
Максимально значение:<br/>
<input type="text" size="2" value="0" name="max"/><br/>
Уровень навыка:<br/>
<input type="text" size="2" value="0" name="skill"/><br/>
<br/>
<input type="button" onclick="total()" value="Расчитать"/><br/>
Бонус от навыка:<br/>
<input id="num" type="text" readonly="1" name="num"/><br/>
Значение с учётом навыка:<br/>
<input id="num2" type="text" readonly="1" name="num2"/><br/>
</form>
<script type="text/javascript">

function total() {
document.forms[0].num.value = (document.forms[0].max.value - document.forms[0].min.value) / 100 * document.forms[0].skill.value;
document.forms[0].num2.value = document.forms[0].min.value + ((document.forms[0].max.value - document.forms[0].min.value)/ 100 * document.forms[0].skill.value);
}

</script>
</body>
</html>

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