CSS - Wierd Bug In Firefox...

<style>
	#control_panel 
		{
		padding:0 0 1em 2em;
		width:600px;
		float:left;
		}

	.smalltext 	
		{ 
		font-family: arial, helvetica, sans-serif;
	   	color: #000000;
	   	font-size: .7em;
		}
		
	.input 
		{ 
	 	font: .9em Arial, Helvetica, sans-serif; 
	 	background-color: #FFFFFF; 
		color: #146eb4; 
	 	border: 1px solid #146eb4; 
		}
		
	label
		{
		text-align: left;
		display: block;
		}

		
	div.search_cell 
		{
		display: inline;
		}
		

</style>


<div id="control_panel">

	<form action="http://test.at" METHOD="post">

		<div class="search_cell">
			<INPUT class="input" NAME="search_box" value="" size="25" maxlength="200"> 
			<label for="search_box"><span class="smalltext">search</span></label>
		</div>

		<div class="search_cell">
			<select class="input" name="range">
				<option value="50">50</option>
				<option value="Any">Any</option>
				<option value="1" >1</option>
			</select>
			<label for="search_box"><span class="smalltext">within</span></label>
		</div>

		<div class="search_cell">
			<select class="input" name="range_measure">
				<option value="Miles">Miles</option>
				<option value="kilometers">Kilometers</option>
			</select> 
			<label for="search_box"><span class="smalltext">range</span></label>
		</div>

		<div class="search_cell">
			<span class="smalltext">of</span>
		</div>

		<div class="search_cell">
			<INPUT class="input" value="" type="Text" name="location" size="10">
			<label for="location"><span class="smalltext">city & state or postal</span></label>
		</div>

		<div class="search_cell">
			<INPUT class="input" type="submit" name="Submit" value="Go">
		</div>

	</form> 	

	</div>

</div>

  

 #main-nav


 {


     background-color: black;


     height: 40px;


 }


 #nav


 {


     position: relative;


     margin: 0;


     padding: 0;


 }


 #nav li


 {


     position: relative;


     float: left;


     display: table;


     width: 99px;


     height: 40px;


     border-right: 1px solid white;


     text-align: center;


     font-size: 10px;


 }


 #nav li:hover


 {


     background-color: darkred;


 }


 #nav a


 {


     display: table-cell;


     vertical-align: middle;


     line-height: 11px;


     font-weight: bold;


     text-decoration: none;


     color: #fff;


 }


 #nav li ul


 {


     position: absolute;


     padding: 0;


     background-color: gray;


     top: 40px;


     left: 0px;


 }


 #nav li ul li


 {


     width: 98px;


     border: 0;


     border-top: 1px solid white;


 } 

  

 <div id="main-nav">


     <ul id="nav">


         <li id="m1"><a href="#1">Main Menu 1</a></li>


         <li>


             <a href="#2">Main Menu 2</a>


             <ul>


                 <li><a href="#2a">Sub-Category 1</a></li>


                 <li><a href="#2b">Sub-Category<br/>with multiple lines</a></li>


             </ul>


         </li>


         <li>


             <a href="#3">Main Menu 3 with multiple lines</a>


             <ul>


                 <li><a href="#3a">Sub-Category 2</a></li>


             </ul>


         </li>


         <li><a href="#4">Main Menu item which has a really long name on it</a></li>


     </ul>


 </div> 

#main-column
{
width:750px;
height: 100%;
margin-left: auto;
margin-right: auto;
background-image:url(/site_images/bodyback.jpg);
}

#left-column
{
width:150px;
float:left;
}

#contents-column
{
width:450px;
float:left;
}

#right-column
{
width:150px;
float:right;
}

<!-- Start of main column -->
<div id="main-column">

<!-- Start of Left Column Div -->
<div id="left-column">
<? include("../includes/leftnav.php"); ?>
<!-- End of Left Column Div -->
</div>

<!-- Start of contents Column Div -->
<div id="contents-column">
<? include("../includes/main.php"); ?>
</div>

<!-- Start of right Column Div -->
<div id="right-column">
<? include("../includes/rightnav.php"); ?>
<!-- End of right Column Div -->
</div>

<!-- End of Main Column Div -->
</div>

<---Style sheet---->
body {
	margin: 0;
	padding: 0;
	background-image: url(assests/wrapperimage.jpg);
	background-attachment: fixed;
	
	}


p {
	color: #FFFFFF;
	font-family: "Courier New", Courier, monospace;
	line-height: 20px;
	letter-spacing: 2px;
	font-size: 12px;
	margin-top: 0;
	margin-bottom: 0px;
	
		}
	
h1	{
	font-size: 2.4em;
	color: #00FF00;
	border-bottom-width: thin;
	border-bottom-color: #00FF00;
	border-bottom-style: dashed;
	margin-top: 40px;
	text-align: center;
			}
h2	{
	font-size: 20px;
	color: #CCFF66;
	text-align: center;
		}


#wrapper {
	width: 800px;
	height: 1150px;
	border-right: 2px solid #00FF00;
	border-left: 2px solid #00FF00;
	border-bottom: #000000 10px;
	margin-right: auto;
	margin-left: auto;
	background: #000000;
				}


		
#banner {
	
	height: 250px;
	width: 800px;
				}
#sidebar  {
	float: left;
	width: 190px;
	height: 500px;
	margin-top: 60px;
	margin-left: 10px;
	margin-bottom: 60px;
	padding-left: 10px;
	color: #FFFFFF;
	text-align: center;
	border-color: #999999;
	border-style: thin;
			}
#sidebar li	{
	list-style: none;
	background-image: url(assests/images/images/images/check.jpg);
	background-repeat: no-repeat;
	padding-left: 25px;
	padding-top: 5px;
	padding-bottom: 5px;
	margin-bottom: 6px;
	text-align: left;
	}

#main  {
	float:right;
	width: 500px;
	padding: 5px;
	
					}

ul.nav 	{
	font-family: Geneva, Arial, Helvetica, sans-serif;
	font-size: 12px;
	margin-left: 50px;
	padding-left: 0px;
	list-style: none;
	float: left;
	width: 750px;
	letter-spacing: 3px;
	}

ul.nav li	{
	float: left;
	padding-left: 10px;
	margin-left: 15px;
	margin-right: 10px;
				}
ul.nav a	{
	display: block;
	padding-left: 15px;
	padding-right: 5px;
	margin-left: 10px;
	margin-right: 5px;
	background-color: #000000;
	text-decoration: none;
	color: #00FF00;
	text-align: center;
		}
ul.nav a:hover	{
	background-image: url(assests/images/images/images/check.jpg);
	background-position: left;
	background-repeat: no-repeat;
	padding-right: 10px;
	color: #FFFFFF;	
	}

</style>

<----Home page HTML---->
<link href="main.css" rel="stylesheet" type="text/css" />


</head>


<body>
<div id="wrapper">
  
  <div id="banner">
   	  <img src="assests/images/starbanner.jpg" />
       	  
		
		  <ul class="nav">
       	  <li><a href="index.html">Home</a></li>
            <li><a href="aboutus.html">About us?</a></li>
            <li><a href="services.html">Services</a></li>
            <li><a href="portfolio.html">Portfolio</a></li>
            <li><a href="contactus.html">Contact Us</a></li>            
    </ul>
       
	</div>	


<div id="sidebar">

<h2>Why have a website?</h2>

<p>In todays market having a business or being a professional can cost thousands of dollars and you could be missing out on siginificantly increasing revenues. The internet is low cost method of marketing that yields results with the proper planning, marketing and implemnation. 
Taking advantage of the internet in your overall marketing plan is essential in today's market for your company to grow and remain competitve.

Take a look at our portfolio to see some of the work we've done or contact us today to schedule a no-obligation free consultation.</p>
<p>	
  
		
</p>
</div>






<div id="main">
<h1>Web Design Studio</h1>
<p>star media is a web design studio located in Troy, Michigan. Our specialty is providing afforadable and customized web design services as well as graphic design and print services. With our competitve pricing and custom tailored marketing programs we will drive customers to your website and through your business doors. Our competitive pricing and quick turn around time in developing websites ensures you have your website up and running as quickly as possible without breaking the bank.

From basic and simple websites to high caliber e-commerce database driven websites Gstar media does it all.  
<h2>Why have a website?</h2>

<p>In todays market having a business or being a professional can cost thousands of dollars and you could be missing out on siginificantly increasing revenues. The internet is low cost method of marketing that yields results with the proper planning, marketing and implemnation. 
Taking advantage of the internet in your overall marketing plan is essential in today's market for your company to grow and remain competitve.

Take a look at our portfolio to see some of the work we've done or contact us today to schedule a no-obligation free consultation.</p>
</div>

</div>
</body>

</body>
</html>

<-------About US HTML------>
<link href="main.css" rel="stylesheet" type="text/css" />

</head>

<body>
<div id="wrapper">
  
  <div id="banner">
   	  <img src="assests/images/starbanner.jpg" />
       	  
		
		  <ul class="nav">
       	  <li><a href="index.html">Home</a></li>
            <li><a href="aboutus.html">About us</a></li>
            <li><a href="services.html">Services</a></li>
            <li><a href="portfolio.html">Portfolio</a></li>
            <li><a href="contactus.html">Contact Us</a></li>            
    </ul>
       
	</div>	


<div id="sidebar">
<h2>We offer:</h2>

	
  <ul>
		<li>web design</li>
		<li>web hosting</li>
		<li>e-commerce</li>
		<li>logo design</li>
		<li>business card design</li>
		<li>flyer design</li>
		<li>customized marketing campaigns</li>
		<li>Search engine optimization</li>
		<li>web maintence</li>
		<li>illustration</li>
	</ul>
</p>
</div>






<div id="main">
<h1>Our Promise.</h1>
<p>star media is created with the goal of providing affordable web design service to small business owners and professionals. I graduated from Sheridan college with a degree in business and later went on to get a degree in graphic design. With a strong background in business I understand how to market your business and message effectively to prospective customers that will help spread the awarness of your products and services in order to increase your revenues. I have a strong understanding of graphic design principles with a working knowledge of CSS/XHTML, Photoshop CS3, and Illustrator CS3.
</p>
</div>

</div>
</body>
</html>