Creating a drop-down box with links

To have it scroll, set the size of the drop menu to something smaller than the amount of items. Below you can see an example, plus some JavaScript after it to set the value to something. I'll mention that using a drop box as your navigation is a crappy way of doing it. Why? Because people who generally leave JavaScript disabled (like me) won't be able to navigate your web site. Also, search engines won't be able to navigate your pages either, meaning your site won't be indexed and people won't find your web site very easily. You can use CSS to create a drop menu effect without using the select tag, and it would make it completely accessible.

HTML:

<select id="menudrop" size="3">
  <option value="item-1">Item 1</option>
  <option value="item-2">Item 2</option>
  <option value="item-3">Item 3</option>
  <option value="item-4">Item 4</option>
  <option value="item-5">Item 5</option>
  <option value="item-6">Item 6</option>
</select>

PHP:

// JavaScript for setting the value in a drop box
function SetDropMenu(idx)
{
  document.getElementById('menudrop').value = idx;
}
SetDropMenu('item-3');