Индивидуальное задание. Листинг html-файла <html> <head lang="en"> <link rel="stylesheet"

Листинг html-файла

<html>
	<head lang="en">
	<link rel="stylesheet" type="text/css" href="Lab1.css">
	<meta charset="UTF-8">
	<title></title>
	<link href="bootstrap.css" rel="stylesheet">
	<script src="bootstrap.js"></script>
	<script>

	function CalculatePrice()
	{
	document.forms["ShoppingForm"]["Price"].value = '';
	document.forms["ShoppingForm"]["Discount"].value = '';
	document.forms["ShoppingForm"]["TotalPrice"].value ='';


	var count = document.forms["ShoppingForm"]["Count"].value;

	var selectedGood = document.forms["ShoppingForm"]["GoodsSelect"].value;

	var price;

	if(count>=1) {
	switch (selectedGood) {
	case '0':
	price = 7500*count;
	break;
	case '1':
	price = 8000*count;
	break;
	case '2':
	price = 9000*count;
	break;
	}

	var discount=0;

	if(count>=500)
	{
	document.forms["ShoppingForm"]["Discount"].value ='1% ';
	discount = price*0.01;
	}
	if(count>=1000)
	{
	document.forms["ShoppingForm"]["Discount"].value = '2% ';
	discount = price*0.02;
	}
	if(count>=2000)
	{
	document.forms["ShoppingForm"]["Discount"].value = '3% ';
	discount = price*0.03;
	}


	document.forms["ShoppingForm"]["Price"].value = price;
	document.forms["ShoppingForm"]["Discount"].value += discount;
	document.forms["ShoppingForm"]["TotalPrice"].value = price - discount;


	}
	else
	{
	alert("Введено некорректное значение в поле Количество")
	}


	}


	</script>

	</head>
	<body>

	<div>
	<br>
	<form name="ShoppingForm" >
	<div id="body">
	<div id="body1">

	<label>Выберите товар</label>
	<select name="GoodsSelect" onchange="CalculatePrice()">
	<option value="0">Ноутбук Acer</option>
	<option value="1">Ноутбук Asus</option>
	<option value="2">Ноутбук HP</option>
	</select>
	<br>
	<label>Количество</label>

	<input type="text" onkeyup="CalculatePrice()" name="Count" />
	<br>
	<label>Цена</label>

	<input type="text" name="Price" readonly />

	<br>
	<label>Скидка</label>
	<input type="text" name="Discount" readonly />
	<br>
	<label>Цена со скидкой</label>
	<input type="text" name="TotalPrice" readonly />
	<br>


	</div>

	</div>

	</form>


	</div>

	</body>
	</html>