IE7 navigation menu won't display right

[Kel Muppy]

my navigation menu was okay in Firefox but when i view it in the IE7 the sub menus are aligned on list next to it!

please help

below is my CSS and Juery and html file

<script type="text/javascript">

		$(document).ready(function() {
		$('.myMenu > li').bind('mouseover', openSubMenu);
		$('.myMenu > li').bind('mouseout', closeSubMenu);
		function openSubMenu() {
		$(this).find('ul').css('visibility', 'visible');
		};
		function closeSubMenu() {
		$(this).find('ul').css('visibility', 'hidden');
		};
		});
	</script> 



<!--nav start-->
<div class="container container-2">
  <div class="row row-2">  
      <div class="block display-block nav ">
	  
			<div class="search">
				<div class="searchfield">
					<div>
					<label><input type="submit" value="search" class="button-search" /></label>
					<input type="text" class="search-textfield" />
					</div>
				</div>
			</div>
			<ul class="myMenu">
				<li><a href="#" class="menu1"> menu item 1</a></li>
				<li><a href="#" class="menu2">menu item 2</a>
					<ul class="submenu1"> 
						<li><a href="#">sub menu item 1</a></li> 
						<li><a href="#">sub menu item 2</a></li> 
						<li><a href="#">sub menu item 3</a></li> 
						<li><a href="#">sub menu item 4</a></li>
					</ul> 
					
				</li> 
				<li><a href="#" class="menu3">menu item 3</a> 
					<ul class="submenu2">
					<li><a href="#">sub menu item 1</a></li> 
						<li><a href="#">sub menu item 2</a></li>
						<li><a href="#">sub menu item 3</a></li>
						<li><a href="#">sub menu item 4</a></li>
					</ul> 
				</li>
				
				<li><a href="#" class="menu4"></a>
 
					<ul class="submenu4">
					<li><a href="#">sub menu item 1</a></li> 
						<li><a href="#">sub menu item 2</a></li>
						<li><a href="#">sub menu item 3</a></li>
						<li><a href="#">sub menu item 4</a></li>
					</ul> 
				
				
				</li>
				
				<li><a href="#" class="menu5"></a>
					<ul class="submenu5">
					<li><a href="#">sub menu item 1</a></li> 
						<li><a href="#">sub menu item 2</a></li>
						<li><a href="#">sub menu item 3</a></li>
						<li><a href="#">sub menu item 4</a></li>
					</ul> 
				
				</li>
				<li><a href="#" class="menu6"></a></li>
				<li><a href="#" class="menu7"></a></li>
			
			</ul>
	
      </div>
  </div>
</div>
<!--nav end-->

.menu1 { width:106px; height:30px; background:url(../images/listbg.jpg) repeat-x; border-right:1px solid #1e3503;}
.menu2 {clear:left;width:99px; height:30px; background:url(../images/listbg.jpg) repeat-x; border-left:1px solid #465e05; border-right:1px solid #1e3503; }
.menu3 {width:172px; height:30px; background:url(../images/listbg.jpg) repeat-x;border-left:1px solid #465e05; border-right:1px solid #1e3503;}
.menu4 {width:90px; height:30px; background:url(../images/menu4.jpg) no-repeat; border-left:1px solid #465e05; border-right:1px solid #1e3503;}
.menu5 {width:86px; height:30px; background:url(../images/menu5.jpg) no-repeat; border-left:1px solid #465e05; border-right:1px solid #1e3503; }
.menu6 {width:98px; height:30px; background:url(../images/menu6.jpg) no-repeat; border-left:1px solid #465e05; border-right:1px solid #1e3503;}
.menu7 {width:88px; height:30px; background:url(../images/menu7.jpg) no-repeat;}



/*style the main menu*/ 
.myMenu {
	float:left;
	width:752px;
	height:43px;
    margin-top:1px;
   	/*background:url(../images/listbg.jpg) repeat-x;*/
}
.myMenu li {
    float: left;
    list-style: none outside none;
	text-align:center;
	height:43px;
	width:auto;
}
.myMenu li a:link, .myMenu li a:visited {
    color: #ebe54e;
    display: block;
    margin: 0;
    text-decoration: none;
	padding-top:13px;
	height:30px;
}
.myMenu li a:hover {
    background-color: #00CCFF;
}

/*style the sub menu*/
.myMenu li ul {
    margin-top: 43px;
    padding: 0;
    position: absolute;
    visibility: hidden;
	z-index: 1000;
}

.myMenu li ul li {
    display:block;
	float: none;
}
/*fix size of submenus*/
ul.submenu1 li a{width:99px; /*border-left:1px solid #465e05; border-right:1px solid #1e3503; border-bottom:1px solid #1e3503; */ }
ul.submenu2 li a{width:172px; /*border-left:1px solid #465e05; border-right:1px solid #1e3503; border-bottom:1px solid #1e3503; */ }
ul.submenu5 li a{width:86px; /*border-left:1px solid #465e05; border-right:1px solid #1e3503; border-bottom:1px solid #1e3503; */ }
ul.submenu4 li a{width:90px; /*border-left:1px solid #465e05; border-right:1px solid #1e3503; border-bottom:1px solid #1e3503; */ }

.myMenu li ul li a:link ,.myMenu li ul li a:visited {
    background-color: #13552d;
}

.myMenu li ul li a:hover {
    background-color: #34802f;\
}

[jagoan]

Target ALL VERSIONS of IE

 
<!--[if IE]>
        <link rel="stylesheet" type="text/css" href="all-ie-only.css" />
<![endif]-->

Target IE 7 ONLY

 
<!--[if IE 7]>
        <link rel="stylesheet" type="text/css" href="ie7.css">
<![endif]-->