SWFObject and Resizing Div

I have the following HTML code, what I want to do is to split the page into two divs, and place the object to the left side. However, the swf file covers all of the page, not just the left side. What could be the problem?

Thanks,

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
 <title>test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="language" content="en" />
 <meta name="description" content="" />
 <meta name="keywords" content="" />

 <script src="js/swfobject.js" type="text/javascript"></script>
 <script type="text/javascript">
  var flashvars = {
  };
  var params = {
   menu: "false",
   scale: "noScale",
   allowFullscreen: "true",
   allowScriptAccess: "always",
   bgcolor: "#FFFFFF"
  };
  var attributes = {
   id:"player"
  };

  swfobject.embedSWF("player.swf", "left", "100%", "100%", "9.0.0", "expressInstall.swf", flashvars, params, attributes);

 </script>
 <style>
   html, body { height:100%; width:100%; }
   body  { margin:0; padding:0;  }
   #left {
    float: left;
    width: 50%;
   }

   #right { 
    float: right;
    width: 50%;
   }
 </style>
</head>
<body>
<div id="container" >
<div id="left">

  <p><a href="http://www.adobe.com/go/getflashplayer"><img 
   src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" 
   alt="Get Adobe Flash player" /></a></p>
</div>
<div id="right">Test</div>
</div>
</body>
</html>

Solution

Change your styles to this:

 <style type="text/css">
   html, body { height:100%; width:100%; }
   body  { margin:0; padding:0;  }
   .box {
        float:left;
        width:50%;
    }
 </style>

then change your body html to this (so that you are replacing a Div inside your left 'box':

<div id="container" >

<div class="box">

    <div id="left">
        <p>
            <a href="http://www.adobe.com/go/getflashplayer">
            <img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" />
            </a>
        </p>
   </div>

</div>

<div class="box">
    Test
</div>

</div>

This worked how I imagined you were thinking in firefox for me anyway