程序代码：

window.onload = function() {
            var settings = {
                flash_url : "../swfupload/swfupload.swf",
                upload_url: "upload.php",
                post_params: {"PHPSESSID" : ""},
                file_size_limit : "100 MB",
                file_types : "*.*",
                file_types_description : "All Files",
                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",
                button_width: "65",
                button_height: "29",
                button_placeholder_id: "spanButtonPlaceHolder",
                button_text: '<span class="theFont">Hello</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);
         };