Mega Code Archive
Is Select a select-multiple
<![CDATA[
<html>
<body>
<select id="mySelect" size="5" multiple="select-multiple">
<option>Item 1</option>
<option>Item 2</option>
<option>Item 3</option>
<option>Item 4</option>
<option>Item 5</option>
</select>
<button onclick="alert(mySelect.multiple);">Multiple</button>
</body>
</html>
]]>