[Solved] Nav list images wrap when browser window is resized

I have a horizontal nav bar of images running across the top of my website. When I reduce the size of my Firefox browser window to less than 728px wide (the width of my page design,) those nav images wrap to fit. I would like to not have this behavior.

I assume that the error is to be found in the #p7menubar rules, but I haven't been able to solve it with my level of CSS experience. Any solution or suggestion would be appreciated.

Cheers,

York

/* Theme Name: yorkrules Author: Royal York Funston Author URI: http://www.yorkrules.com/ */

/******************************************************************* Lightbox */
@import url(lightbox.css);

/******************************************************************* Global Styles */

html {
margin: 0px;
padding: 0px;
background-attachment: fixed;
background-color: #353535;
background-image: url(images/backgroundGradient.jpg);
background-repeat: repeat-x;
color: #CCC;
text-align: center;
}
body {
font: 11px "Trebuchet MS", Arial, Helvetica, sans-serif;
line-height: 1.75;
margin: 0px auto;
text-align: left;
width: 728px;
}
#wrap {
margin: 0px auto;
padding: 0px;
}
#banner {
margin: 104px 0px 0px 0px;
line-height: 0px;
}

/******************************************************************* Headings */
h1 {
display: block;
color: #FFF;
font-size: 11px;
text-transform: uppercase;
margin: 0;
padding: 0;
}
h2,
h3 {
text-transform: uppercase;
color: #999;
font-size: 10px;
letter-spacing: 0.1em;
margin: 0;
padding-bottom: 5px;
}

/******************************************************************* Hyperlinks */
#footer a {
color: #CCC;
}
a img {
border: none;
}
a:link {
color: #F1AC02;
text-decoration: none;
}
#l_sidebar a:link,
#r_sidebar a:link {
color: #CCC;
}
.contenttitle h1 a:link {
color: #FFF;
}
a:visited {
color: #89A5B1;
text-decoration: none;
}
.contenttitle h1 a:visited {
color: #FFF;
text-decoration: none;
}
a:hover,
#l_sidebar a:hover,
#r_sidebar a:hover,
#p7menubar li a:hover {
color: #FFF;
}

/******************************************************************* Lists */
#wrap ol, #wrap ul {
margin: 0;
padding: 0px 0px 15px 20px;
}
#wrap p + ol, #wrap p + ul {
margin-top: -10px;
}
#wrap ul {
list-style: square;
}
ol#commentlist {
list-style-type: none;
margin: 0px;
padding: 5px 0px;
}
body #wrap ol.mxm {
margin-top: 0;
padding-bottom: 0;
}
body #wrap ol.mxm li {
margin-bottom: 15px;
}
body #wrap ul.mxm {
margin: 15px 0 0 15px;
padding: 0;
}
body #wrap ul.mxm li {
margin-bottom: 15px;
}

/******************************************************************* Navbar */
#p7menubar {
padding: 0px;
margin: 0px;
position: absolute;
top: 0px;
clear: both;
z-index: 10;
font-size: 9px;
list-style: none;
}
#p7menubar a {
display: block;
width: 104px;
height: 104px;
}
#p7menubar li {
width: 104px;
height: 104px;
float: left;
text-indent: -9999px;
background-repeat: no-repeat;
}
#p7menubar li a {
color: #CCC;
display: block;
width: 104px;
overflow: hidden;
}
#p7menubar li li {
height: auto;
}
#p7menubar li ul {
width: 104px;
position: relative;
display: none;
color: inherit;
background-color: #666;
}
#p7menubar ul {
padding: 0px;
margin: 0px;
list-style: none;
}
#p7menubar ul li {
width: 104px;
}
#p7menubar ul li a {
line-height: 2em;
height: 2em;
text-align: right;
padding-right: 9px;
width: 95px;
text-decoration: none;
}
#p7menubar li:hover ul, #p7menubar li.p7hvr ul {
display: block;
}
body#indexPage li#index {
background-image: url(images/nav/navIndexColor.jpg);
}
body#learnPage li#learn {
background-image: url(images/nav/navLearnColor.jpg);
}
body#lookPage li#look {
background-image: url(images/nav/navLookColor.jpg);
}
body#playPage li#play {
background-image: url(images/nav/navPlayColor.jpg);
}
body#readPage li#read {
background-image: url(images/nav/navReadColor.jpg);
}
body#sharePage li#share {
background-image: url(images/nav/navShareColor.jpg);
}
body#shopPage li#shop {
background-image: url(images/nav/navShopColor.jpg);
}
#index {
background-image: url(images/nav/navIndexGray.jpg);
}
#learn {
background-image: url(images/nav/navLearnGray.jpg);
}
#look {
background-image: url(images/nav/navLookGray.jpg);
}
#play {
background-image: url(images/nav/navPlayGray.jpg);
}
#read {
background-image: url(images/nav/navReadGray.jpg);
}
#share {
background-image: url(images/nav/navShareGray.jpg);
}
#shop {
background-image: url(images/nav/navShopGray.jpg);
}
#index:hover a, #index a:focus, #index a:active, #index.p7hvr a {
background-image: url(images/nav/navIndexColor.jpg);
}
#learn:hover a, #learn a:focus, #learn a:active, #learn.p7hvr a {
background-image: url(images/nav/navLearnColor.jpg);
}
#look:hover a, #look a:focus, #look a:active, #look.p7hvr a {
background-image: url(images/nav/navLookColor.jpg);
}
#play:hover a, #play a:focus, #play a:active, #play.p7hvr a {
background-image: url(images/nav/navPlayColor.jpg);
}
#read:hover a, #read a:focus, #read a:active, #read.p7hvr a {
background-image: url(images/nav/navReadColor.jpg);
}
#share:hover a, #share a:focus, #share a:active, #share.p7hvr a {
background-image: url(images/nav/navShareColor.jpg);
}
#shop:hover a, #shop a:focus, #shop a:active, #shop.p7hvr a {
background-image: url(images/nav/navShopColor.jpg);
}
#p7menubar li:hover ul a, #p7menubar li:focus ul a, #p7menubar li:active ul a, #p7menubar li.p7hvr ul a {
background-image: url(images/nav/navMenuGray.jpg);
}
#index ul li a:hover {
background-image: url(images/nav/navMenuIndex.jpg);
}
#learn ul li a:hover {
background-image: url(images/nav/navMenuLearn.jpg);
}
#look ul li a:hover {
background-image: url(images/nav/navMenuLook.jpg);
}
#play ul li a:hover {
background-image: url(images/nav/navMenuPlay.jpg);
}
#read ul li a:hover {
background-image: url(images/nav/navMenuRead.jpg);
}
#share ul li a:hover {
background-image: url(images/nav/navMenuShare.jpg);
}
#shop ul li a:hover {
background-image: url(images/nav/navMenuShop.jpg);
}
.clearit {
clear: both;
height: 0;
line-height: 0;
font-size: 0;
}

/******************************************************************* Sidebars */
#l_sidebar {
float: left;
width: 160px;
margin: 15px 0 20px;
padding: 0;
}
#r_sidebar {
float: right;
width: 160px;
margin: 15px 0 20px;
padding: 0;
}
#l_sidebar ul,
#r_sidebar ul {
list-style: none;
margin: 0;
padding: 0;
}
#l_sidebar li,
#r_sidebar li {
list-style: none;
margin: 0;
padding: 0;
}
#l_sidebar li ul,
#r_sidebar li ul,
.textwidget {
padding-bottom: 10px;
margin-bottom: 10px;
border-bottom: 1px solid #666;
}
#l_sidebar ul li,
#r_sidebar ul li {
margin: 0;
padding: 0;
}
#l_sidebar ul li .wordtube #1,
#r_sidebar ul li .wordtube #1 {
max-width: 158px;
}

/******************************************************************* Widgets */
#r_sidebar h2 a:link,
#r_sidebar h2 a:link {
color: #999;
}
#l_sidebar .recentcomments .post,
#r_sidebar .recentcomments .post {
display: block;
}
#l_sidebar .recentcomments a:link,
#r_sidebar .recentcomments a:link {
color: #F1AC02;
}
#l_sidebar .recentcomments a:hover,
#r_sidebar .recentcomments a:hover {
color: #FFF;
}
#text-1 .textwidget #subscribePosts .rss,
#text-1 .textwidget #subscribeComments .rss {
position: relative;
top: 2px;
float: left;
border: none;
margin: 0 5px 0 0;
padding: 0;
vertical-align: middle;
line-height: 0;
}
#searchform {
margin-bottom: 10px;
padding: 0px;
overflow: hidden;
padding-bottom: 15px;
border-bottom: 1px solid #666;
}
#s,
.akst_text,
#chatbarText,
#shoutboxname {
border: 1px solid #666;
padding: 3px;
width: 152px;
font: 11px "Trebuchet MS", Arial, Helvetica, sans-serif;
color: #999;
background-color: #333;
}
#searchform input[type="submit"],
.dem-vote-button,
#shareitsubmit,
#submitchat {
border: 1px solid #666;
margin-top: 10px;
width: 100%;
font: 11px "Trebuchet MS", Arial, Helvetica, sans-serif;
color: #333;
background: #999;
background-image: url(images/searchSubmit.jpg);
background-repeat: no-repeat;
background-position: center;
}
#searchform input[type="submit"]:hover,
.dem-vote-button:hover,
#shareitsubmit:hover,
#submitchat:hover {
background: #F1AC02;
color: #333;
}
#l_sidebar #democracy ul,
#r_sidebar #democracy ul {
border: none;
}
#l_sidebar li#democracy,
#r_sidebar li#democracy {
margin-bottom: 10px;
}
#l_sidebar #unity-signup,
#r_sidebar #unity-signup {
color: #333;
}

/******************************************************************* Plugins */
strong.search-excerpt {
background-color: #F1AC02;
}
.wordtube {
border: 1px solid #666;
margin-bottom: 15px;
}
.hilite {
color: #333;
background-color: #f17c0e;
}
.hilite1 {
color: #333;
background-color: #f1ac02;
}
.hilite2 {
color: #333;
background-color: #949200;
}
.hilite3 {
color: #333;
background-color: #89a5b1;
}
#r_sidebar #AnthonySupporters li,
#l_sidebar #AnthonySupporters li {
list-style-image: url(http://www.yorkrules.com/wp-content/themes/yorkrules/images/icons/ul-li-triangle.png);
margin-left: 30px;
padding: 0;
}
#r_sidebar li ul#AnthonySupporters,
#l_sidebar li ul#AnthonySupporters {
border-bottom: none;
margin-bottom: 0px;
padding-bottom: 0px;
}

/******************************************************************* Content */
#content {
margin: 0px auto;
padding: 0px;
width: 728px;
}
#content p {
margin: 0 0 15px;
padding: 0;
}
#content img {
border: 1px solid #666;
max-width: 100%; /*Not supported by IE6*/
}
#content img.noborder {
border: none;
max-width: 100%; /*Not supported by IE6*/
}
#content img.iTunesIcon {
border: none;
vertical-align: middle;
}
#content img.thumb {
position: relative;
float: left;
top: 5px;
margin: 0px 8px 8px 0px;
max-height: 104px;
}
#content img.full {
margin: 5px 0 0 0;
max-width: 372px;
}
#content img.thumbAnthony,
#content img.thumbLRF {
margin: 8px;
}
blockquote {
border-left: 2px dotted #666;
color: #CCC;
margin: 0px 0px 0px 10px;
padding: 0px 20px 0px 10px;
}
#content p.credit {
padding-left: 22px;
}
#content blockquote p {
margin: 0px 0px 16px 0px;
padding: 0px;
}
#contentmiddle {
float: left;
margin: 20px 7px;
padding: 0 8px;
width: 374px;
}
.contenttitle {
padding: 0;
margin-bottom: 6px;
line-height: 1;
display: block;
}
#content .contenttitle p { /*post date and comments*/
margin-top: 10px;
margin-bottom: 0px;
font-size: 10px;
color: #999;
}
#contentmiddle .contenttitle img {
border: none;
margin: 0px 10px 0px 0px;
width: 32px;
height: 32px;
float: left;
display: inline;
}
#content img.wp-smiley,
#content img.wp-wink {
border: none;
float: none;
margin: 0px;
padding: 0px;
}
.postspace {
margin-bottom: 15px;
padding: 0;
border-bottom: 1px solid #666;
}
#content img.china {
margin: 6px 0 5px 11px;
}
blockquote.anthonyProjectEmails {
border-left: 2px dotted #666;
border-bottom: 2px dotted #666;
color: #CCC;
margin: 0px 0px 20px 10px;
padding: 0px 10px -10px 10px;
}
blockquote.anthonyProjectEmails strong {
font-weight: bolder;
font-size: larger;
color: #FFF;
}

/******************************************************************* Footer */
#footer {
border-top: 1px solid #666;
margin: 20px auto;
padding: 10px 0px;
text-align: center;
width: 728px;
clear: both;
}
#footernav {
margin: 0;
padding: 0;
}
#footernav li {
display: inline;
list-style: none;
border-right: 1px solid #666;
padding: 0 6px;
text-transform: lowercase;
}
#footernav li#last {
border-right: 0 none;
padding-right: 0;
}
#footernav a:link,
#footernav a:visited,
#footercopyright {
color: #999;
}
#footernav a:hover {
color: #FFF;
}
#footercopyright {
margin: 5px 0;
}

/******************************************************************* Comments */
#commentblock {
background: #515151;
border: 1px solid #666;
color: #CCC;
float: left;
margin: 0;
padding: 15px;
width: 340px;
}
.commentdate {
padding-left: 0;
}
.commentname {
margin: 0px;
padding: 45px 45px 45px 0;
}
.commentinfo {
clear: both;
}
.commenttext,
.commenttext-admin {
color: inherit;
background: #515151;
clear: both;
margin: 5px 0 15px;
width: 340px;
padding: 0 0 9px 0;
border-bottom: 1px solid #666;
}
#commentsform,
#commentsform form {
margin: 0;
padding: 0;
text-align: left;
}
#commentsform p {
margin: 0;
padding: 0;
line-height: 2;
}
#commentsform p.subscribe-to-comments {
margin: 0;
padding-top: 10px;
}
#commentsform form textarea {
width: 99%;
}
p.comments_link img {
margin: 0;
padding: 0;
}
#hbutt {
border: 1px solid #666;
width: 100%;
font: 11px "Trebuchet MS", Arial, Helvetica, sans-serif;
color: #333;
background: #999;
background-image: url(images/commentSubmit.jpg);
background-repeat: no-repeat;
background-position: center;
}
#hbutt:hover {
background: #F1AC02;
color: #333;
}
p#login {
padding-bottom: 5px;
}
#s4 {
margin: 19px 0;
}