Q:

Why isn't `multiple` attribute working with `select` tag as stated in the documentation?

Here according to documentation:

multiple = "multiple" or "" (empty string) or empty If present,
  indicates that its select element represents a control for selecting
  zero or more options from a list of options. If not present, indicates
  that its select element represents a control for selecting a single
  option from a list of options.

As the documentation says ....represents a control for selecting zero or more options from a list of options.... why can't I select more than one options at the same time in this example ?
Code I am having problem with is:
<html>
<head>
<title>Untitled Document</title>
</head>
<body>
<form id="form1" name="form1" method="get" action="display.php">
  <table width="300" border="1">
    <tr>
      <td><label>Multiple Selection </label>&nbsp;</td>
      <td>
      <select name="select2" size="10" multiple="multiple" tabindex="1">
        <option value="11">eleven</option>
        <option value="12">twelve</option>
        <option value="13">thirette</option>
        <option value="14">fourteen</option>
        <option value="15">fifteen</option>
        <option value="16">sixteen</option>
        <option value="17">seventeen</option>
        <option value="18">eighteen</option>
        <option value="19">nineteen</option>
        <option value="20">twenty</option>
      </select>
      </td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><input type="submit" name="Submit" value="Submit" tabindex="2" /></td>
    </tr>
  </table>
</form>
</body>
</html>

Also, I am using Google Chrome.

A:

Try either <select name="select2" size="10" multiple="true" tabindex="1"> or just <select name="select2" size="10" multiple tabindex="1">

