Anyone using Dreamweaver CS3 to create Spry horizonal menus will discover that they don’t display correctly in Internet Explorer.  There is a simple fix for this. In the CSS file add a width to the submenu style – around line 42:

ul.MenuBarHorizontal ul
{
width: 250px;
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
z-index: [...]