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    <html>
    <head>
    <title>07.IsPrime</title>
    <link href="styles/js-console.css" rel="stylesheet" />
    </head>
    <body>
        <fieldset id="inputs">

            <label for="number">Enter a number = </label>
            <input type="text" id="number" />
            <br />
            <input type="submit" value="Is the number prime?" onclick="IsPrime()" />

        </fieldset>
    <div id="js-console"></div>
    <script src="scripts/js-console.js"></script>

    <script>
            function IsPrime()
            {
                var number = parseInt(document.getElementById("number").value);
                var prime = true;
                for (var i = 2; i <= Math.sqrt(number); i++)
                {
                    if (number % i == 0)
                    {
                        prime = false;
                        break;
                    }
                }

                if(prime)
                {
                    jsConsole.writeLine("The number <strong>is prime</strong>");
                }
                else
                {
                    jsConsole.writeLine("The number is <strong>not prime</strong>");
                }
            }
    </script>
    </body>
    </html>