Nav bar problems in IE7

[mckenzie915]

I'm having problems with the spacing of my navigation bar for IE7. It works in other browsers but drops down to a second line in IE7. Here is the page:
http://www.honeymoonersreviewguide.com/index2.php

Thanks so much,
Michelle

 
#nav-container {
    height: 28px; 
    width: 100%;
    top: 1em;
    left: 1em;
    background: #3068B1 url('../interior/bkg_header.png') 0 0 repeat-x; 
    border-top: 1px solid #23518E;
    border-bottom: 1px solid #23518E; }
 
#nav {
    font-size: 10px;
    float: left;
    margin: 0; 
    padding: 0; }
 
#nav a     {
    text-align: left;
    display: block;
    border: 1px solid #23518E;
    border-top: none;
    white-space: nowrap;
    margin: 0;
    padding: 4px; }
 
#nav a:link, #nav a:visited, #nav a:active {
    color: #FFFFFF;
    background-color: #3068B1;
    text-decoration: none; }
 
#nav a:hover {
    color: #23518E;
    background-color: #CCCCCC;
    text-decoration: none; }    
 
#nav a.top_parent {     
        margin: 0;
        padding: 7px 18px;
        background: #3068B1 url('../interior/bkg_header.png') 0 0 repeat-x; 
        text-align: center;
        font-weight: bold; 
        border-right: none; }
 
#nav a.top_parent:hover {
    color: #FFFFFF;
    background: none;
    background-color: #3068B1; }    
 
#nav a.align { 
    margin: 0; 
    padding: 7px 18px;
    background: #3068B1 url('../interior/bkg_header.png') 0 0 repeat-x; 
    text-align: center;
    font-weight: bold; 
    border: none; 
    border-bottom: 1px solid #23518E; }
 
#nav a.align:hover {
    color: #FFFFFF;
    background: none;
    background-color: #3068B1;}
 
#nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    float: left;
       width: auto; }
 
#nav li {
    position: relative;
    min-height: 1px; 
    vertical-align: bottom; }
 
#nav ul ul {
    position: absolute;
    z-index: 500;
    top: auto;
    display: none;
    padding: 1em;
    margin: -1em 0 0 -1em; 
    width: auto; }
 
div#nav li:hover {
    cursor: pointer;
    z-index: 100; }
 
div#nav li:hover ul ul,
div#nav li li:hover ul ul,
div#nav li li li:hover ul ul,
div#nav li li li li:hover ul ul
{display:none;}
 
div#nav li:hover ul,
div#nav li li:hover ul,
div#nav li li li:hover ul,
div#nav li li li li:hover ul
{display:block;}
 
<!--[if lt IE 7]>
<style type="text/css" media="screen">
#nav{float:none;}
body{behavior:url(csshover.htc); font-size:100%;}
#nav ul li{float:left; width: 100%;}
#nav a{height:1%;font:normal 0.7em/1.4em arial, sans-serif;}
</style>
<![endif]-->
 
 
<div id="nav-container" >
 
<div id="nav">
 
<ul><li><a href="http://www.honeymoonersreviewguide.com/index.php" class="align">Home</a></li></ul>
 
<ul><li><a href="http://www.honeymoonersreviewguide.com/planning/index.html" class="top_parent">Planning Tools</a><ul><li><a href="http://www.honeymoonersreviewguide.com/planning/your-perfect-honeymoon.html">Your Perfect Honeymoon QUIZ</a></li><li><a href="http://www.honeymoonersreviewguide.com/planning/timeline.html">Planning Timeline</a></li><li><a href="http://www.honeymoonersreviewguide.com/planning/budget-ideas.html">Budget Ideas &amp; Worksheet</a></li><li><a href="http://www.honeymoonersreviewguide.com/contests/free-honeymoon.html">WIN a Free Honeymoon</a></li><li><a href="http://www.honeymoonersreviewguide.com/planning/honeymoon-registry-tips.html">Registry Tips</a></li></ul></li></ul><ul><li><a href="http://www.honeymoonersreviewguide.com/destinations/index.html" class="top_parent">Destinations</a><ul><li><a href="http://www.honeymoonersreviewguide.com/destinations/top-10-honeymoon-hotspots.html">Top Honeymoon Destinations</a></li><li><a href="http://www.honeymoonersreviewguide.com/africa/index.html">Africa</a></li><li><a href="http://www.honeymoonersreviewguide.com/asia/index.html">Asia</a></li><li><a href="http://www.honeymoonersreviewguide.com/canada/index.html">Canada</a></li><li><a href="http://www.honeymoonersreviewguide.com/destinations/adventure.html">Adventure Locations</a></li></ul></li></ul><ul><li><a href="http://www.honeymoonersreviewguide.com/resorts/index.html" class="top_parent">Hotels</a><ul><li><a href="http://www.honeymoonersreviewguide.com/search.php">Hotel Finder - SEARCH!</a></li><li><a href="http://www.honeymoonersreviewguide.com/resorts/all-inclusive-honeymoons.html">All-inclusive Honeymoon Resorts</a></li><li><a href="http://www.honeymoonersreviewguide.com/resorts/private-islands.html">Private Island Resorts</a></li><li><a href="http://www.honeymoonersreviewguide.com/resorts/vacation-rentals.html">Vacation Rentals</a></li><li><a href="http://www.honeymoonersreviewguide.com/resorts/romantic-room.html">Booking the Perfect Room</a></li></ul></li></ul><ul><li><a href="http://www.honeymoonersreviewguide.com/resorts/packages.html" class="top_parent">Hot Packages</a></li></ul>
 
<ul><li><a href="http://www.honeymoonersreviewguide.com/travel-agents/index.html" class="top_parent">Book a Honeymoon</a></li></ul>
 
<ul><li><a href="http://www.honeymoonersreviewguide.com/cruises/index.html" class="top_parent">Cruises</a><ul><li><a href="cruises/luxury-cruises.html">Luxury Cruise Honeymoons</a></li><li><a href="cruises/destination-weddings.html">Cruise Destination Weddings</a></li></ul></li></ul><ul><li><a href="http://www.honeymoonersreviewguide.com/destination-weddings/index.html" class="top_parent">Destination Weddings</a><ul><li><a href="destination-weddings/wedding-locations.html">Destination Wedding Locations </a></li><li><a href="destination-weddings/styles-ideas.html">Wedding Styles and Ideas</a></li><li><a href="destination-weddings/top-locations.html">Best Wedding Destinations</a></li><li><a href="destination-weddings/celebrity.html">Celebrity Destination Weddings</a></li></ul></li></ul><ul><li><a href="http://www.honeymoonersreviewguide.com/search/search.php" class="top_parent">Search</a></li></ul>
 
</div>
</div>