js 在火狐里失效了

<!-----
[Leo.C, Studio] (C)2004 - 2008

    $Hanization: LeoChung $
    $E-Mail: [email protected] $
    $HomePage: http://imll.net $
    $Date: 2008/11/8 18:02 $
----->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<head>
<title>SWFUpload</title>
<link href="css/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="swfupload/swfupload.js"></script>
<script type="text/javascript" src="js/swfupload.queue.js"></script>
<script type="text/javascript" src="js/fileprogress.js"></script>
<script type="text/javascript" src="js/handlers.js"></script>
<script type="text/javascript">
var swfu; window.onload = function() {
var settings = {
flash_url : "swfupload/swfupload.swf",
upload_url: "upload.php", // Relative to the SWF file
post_params: {"PHPSESSID" : "<?php echo session_id(); ?>"},
file_size_limit : "100 MB",
file_types : "*.html;*.htm",
file_types_description : "HTML",
file_upload_limit : 100,
file_queue_limit : 0,
custom_settings : {
progressTarget : "fsUploadProgress",
cancelButtonId : "btnCancel"
},
debug: false, // Button settings
button_image_url: "images/TestImageNoText_65x29.png", // Relative to the Flash file
button_width: "65",
button_height: "29",
button_placeholder_id: "spanButtonPlaceHolder",
button_text: '<span class="theFont">浏览</span>',
button_text_style: ".theFont { font-size: 16; }",
button_text_left_padding: 12,
button_text_top_padding: 3,

// The event handler functions are defined in handlers.js
file_queued_handler : fileQueued,
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_start_handler : uploadStart,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete,
queue_complete_handler : queueComplete // Queue plugin event
}; swfu = new SWFUpload(settings);
     };
</script>
</head>
<body><div id="content">
<form id="form1" action="index.php" method="post" enctype="multipart/form-data">
<p>点击“浏览”按钮，选择您要上传的文档文件后，系统将自动上传并在完成后提示您。</p>
<p>请勿上传包含中文文件名的文件！</p>
<div class="fieldset flash" id="fsUploadProgress">
<span class="legend">快速上传</span>
  </div>
<div id="divStatus">0 个文件已上传</div>
<div>
<span id="spanButtonPlaceHolder"></span>
<input id="btnCancel" type="button" value="取消所有上传" onclick="swfu.cancelQueue();" disabled="disabled" style="margin-left: 2px; font-size: 8pt; height: 29px;" />
</div> </form></body>
</html>在IE里面 能在 按钮前看到 “浏览”两个字
在火狐里就看不见了