Drop down menu in IE moves to the right

Question

I am using the SPRY in a menu for a client and in IE the drop down elements show to the right.  When I view them in any other browser the are fine.  I made all changes to the SPRY CSS in a separate CSS file.  I have commented out the additional CSS file thinking that might be the problem but the problem persists.  I will include CSS and SPRY CSS code below and a link to the page on my test site.  You can view the HTML code online.  Thanks
http://www.mioweb-test.com/index_fgs.html
@charset "UTF-8";
/* SpryMenuBarHorizontal.css - version 0.6 - Spry Pre-Release 1.6.1 */
/* Copyright (c) 2006. Adobe Systems Incorporated. All rights reserved. */
LAYOUT INFORMATION: describes box model, positioning, z-order
/* The outermost container of the Menu Bar, an auto width box with no margin or padding */
ul.MenuBarHorizontal
    margin: 0;
    padding: 0;
    list-style-type: none;
    font-size: 100%;
    cursor: default;
    width: auto;
/* Set the active Menu Bar with this class, currently setting z-index to accomodate IE rendering bug: http://therealcrisp.xs4all.nl/meuk/IE-zindexbug.html */
ul.MenuBarActive
    z-index: 1000;
/* Menu item containers, position children relative to this container and are a fixed width */
ul.MenuBarHorizontal li
    margin: 0;
    padding: 0;
    list-style-type: none;
    font-size: 100%;
    position: relative;
    text-align: left;
    cursor: pointer;
    width: 8em;
    float: left;
/* Submenus should appear below their parent (top: 0) with a higher z-index, but they are initially off the left side of the screen (-1000em) */
ul.MenuBarHorizontal ul
    margin: 0;
    padding: 0;
    list-style-type: none;
    font-size: 100%;
    z-index: 1020;
    cursor: default;
    width: 8.2em;
    position: absolute;
    left: -1000em;
/* Submenu that is showing with class designation MenuBarSubmenuVisible, we set left to auto so it comes onto the screen below its parent menu item */
ul.MenuBarHorizontal ul.MenuBarSubmenuVisible
    left: auto;
/* Menu item containers are same fixed width as parent */
ul.MenuBarHorizontal ul li
    width: 8.2em;
/* Submenus should appear slightly overlapping to the right (95%) and up (-5%) */
ul.MenuBarHorizontal ul ul
    position: absolute;
    margin: -5% 0 0 95%;
/* Submenu that is showing with class designation MenuBarSubmenuVisible, we set left to 0 so it comes onto the screen */
ul.MenuBarHorizontal ul.MenuBarSubmenuVisible ul.MenuBarSubmenuVisible
    left: auto;
    top: 0;
DESIGN INFORMATION: describes color scheme, borders, fonts
/* Submenu containers have borders on all sides */
ul.MenuBarHorizontal ul
    /*border: 1px solid #CCC; */
/* Menu items are a light gray block with padding and no text decoration */
ul.MenuBarHorizontal a
    display: block;
    cursor: pointer;
    background-color: #EEE;
    padding: 0.5em 0.75em;
    color: #333;
    text-decoration: none;
/* Menu items that have mouse over or focus have a blue background and white text */
ul.MenuBarHorizontal a:hover, ul.MenuBarHorizontal a:focus
    background-color: #33C;
    color: #FFF;
/* Menu items that are open with submenus are set to MenuBarItemHover with a blue background and white text */
ul.MenuBarHorizontal a.MenuBarItemHover, ul.MenuBarHorizontal a.MenuBarItemSubmenuHover, ul.MenuBarHorizontal a.MenuBarSubmenuVisible
    background-color: #33C;
    color: #FFF;
SUBMENU INDICATION: styles if there is a submenu under a given menu item
/* Menu items that have a submenu have the class designation MenuBarItemSubmenu and are set to use a background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal a.MenuBarItemSubmenu
    /*background-image: url(SpryMenuBarDown.gif);*/
    background-repeat: no-repeat;
    background-position: 95% 50%;
/* Menu items that have a submenu have the class designation MenuBarItemSubmenu and are set to use a background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal ul a.MenuBarItemSubmenu
    /*background-image: url(SpryMenuBarRight.gif);*/
    background-repeat: no-repeat;
    background-position: 95% 50%;
/* Menu items that are open with submenus have the class designation MenuBarItemSubmenuHover and are set to use a "hover" background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal a.MenuBarItemSubmenuHover
    /*background-image: url(SpryMenuBarDownHover.gif);*/
    background-repeat: no-repeat;
    background-position: 95% 50%;
/* Menu items that are open with submenus have the class designation MenuBarItemSubmenuHover and are set to use a "hover" background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal ul a.MenuBarItemSubmenuHover
    /*background-image: url(SpryMenuBarRightHover.gif);*/
    background-repeat: no-repeat;
    background-position: 95% 50%;
BROWSER HACKS: the hacks below should not be changed unless you are an expert
/* HACK FOR IE: to make sure the sub menus show above form controls, we underlay each submenu with an iframe */
ul.MenuBarHorizontal iframe
    position: absolute;
    z-index: 1010;
    filter:alpha(opacity:0.1);
/* HACK FOR IE: to stabilize appearance of menu items; the slash in float is to keep IE 5.0 from parsing */
@media screen, projection
    ul.MenuBarHorizontal li.MenuBarItemIE
        display: inline;
        f\loat: left;
        background: #FFF;
/* CSS Document */
body
    background-color:#AE1724; /* red */
    color:#000;
    font-family:Verdana, Arial, Helvetica, sans-serif;
    font-size:12px;
    padding: 0;
    margin: 0px 15px;
#container
    width:970px;
    background-color:#FDF2B9; /* yellow */
    padding-top:0px;
    margin: 0 auto;
#header
    width:970px;
    height:140px;
    padding: 0;
#header img
    display:inline;
#navigation
    background-color:#FDF2B9;  /* yellow */
    height:30px;
    width:965px;
    padding-top:5px;
    margin-left: 5px;
#navigation a
    height:100%;
#navigation ul li
    text-align:center;
    list-style:none;
    font-size: 12px;
    font:"Poor Richard";
#left_content_box
    background-color:#FDF2B9;  /* yellow */
    padding-left:8px;
    padding-right:4px;
    padding-top:5px;
    width:156px;
    float: left; /* since this element is floated, a width must be given */
    clear:both;
#right_content_box
    background-color:#FDF2B9;  /* yellow */
    padding-left:8px;
    float: right; /* since this element is floated, a width must be given */
    padding-top:5px;
    width:156px;
    clear:both;
.main_content_table
    padding-left:8px;
    padding-right:4px;
    padding-top:5px;
    align:center;
    clear:both;
#footer
    font-size:9px;
    text-align:center;
    color: #000;
    background-color:#FDF2B9;  /* yellow */
    width:970px;
    height:27px;

Answer 1

Could you be a little more specific?  I took that section out of my CSS file but the problem persists.
Thank you.
Sincerely,
Michael Yannetta
Mio Web Designs
530-414-3313
[email protected]