swfupload

这个设置时做什么用的？
 upload_url: "upload.aspx",
  
完整<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!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" >
<head >
    <title>SWFUpload Application Demo (ASP.Net 2.0)</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/handlers.js"></script>
<script type="text/javascript">
var swfu;
window.onload = function () {
swfu = new SWFUpload({
// Backend Settings
upload_url: "upload.aspx",
                post_params : {
                    "ASPSESSID" : "<%=Session.SessionID %>"
                }, // File Upload Settings
file_size_limit : "2 MB",
file_types : "*.jpg",
file_types_description : "JPG Images",
file_upload_limit : "0",    // Zero means unlimited // Event Handler Settings - these functions as defined in Handlers.js
//  The handlers are not part of SWFUpload but are part of my website and control how
//  my website reacts to the SWFUpload events.
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete, // Button settings
button_image_url: "images/XPButtonNoText_160x22.png",
button_placeholder_id : "spanButtonPlaceholder",
button_width: 160,
button_height: 22,
button_text : '<span class="button">Select Images <span class="buttonSmall">(2 MB Max)</span></span>',
button_text_style : '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }',
button_text_top_padding: 1,
button_text_left_padding: 5, // Flash Settings
flash_url : "swfupload/swfupload.swf", // Relative to this file custom_settings : {
upload_target : "divFileProgressContainer"
}, // Debug Settings
debug: false
});
}
</script>
</head>
<body>   
    <form id="form1" runat="server">   
        <div id="header">   
            <h1 id="logo"><a href="../">SWFUpload</a></h1>   
            <div id="version">v2.1.0 Beta</div>   
        </div>   
       <div id="content">   
                <h2>Application Demo (ASP.Net 2.0)</h2>   
            
        <div id="swfu_container" style="margin: 0px 10px;">   
            <div>   
                           <div><span id="spanButtonPlaceholder"></span>11</div> 
                <button id="btnBrowse" type="button" style="padding: 5px;" onclick="swfu.startUpload(); ">
                <img src="images/page_white_add.png" style="padding-right: 3px; vertical-align: bottom;" alt="Add Icon" />Select Images <span style="font-size: 7pt;">(2 MB Max)</span></button>   
                <asp:Button ID="btnSave" runat="server" OnClick="btnSave_Click" Text="Save Select Images" Width="150px" />   
                <asp:Button ID="btnClear" runat="server" Text="Clear Select Images" OnClick="btnClear_Click" Width="150px" /></div>   
            <div id="divFileProgressContainer" style="height: 75px;"></div> 
 
            <div id="thumbnails"></div>   
        </div>   
        </div>   
    </form>   
</body>  
</html>