<form method="post" action="index.html" id="myform" name="myform">
    <fieldset class="fieldset2">
        <legend>Register</legend>
        <p>
        <label class="title" for="username">Username:</label>
        <input id="username" type="text" name="username"><br /><br />
        <label class="title" for="password">Password:</label>
        <input id="password" type="password" name="password"><br /> <br />
        <label class="title" for="e-mail">Email:</label>
        <input id="e-mail" type="email" name="email">
        </p>

        <input id="submit" type="submit" value="Register" onclick="return validate()"><br />
        <span id="message" class="error">Username: alphabets and numbers only(5 - 15 characters) Password alphabets and numbers only(6 - 20 characters)</span>
    </fieldset>

</form>