JP2000076266A - System/method for automatically executing browser operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide automatic execution system/method for recording/ reproducing an operation on a web browser. SOLUTION: An event recording/reproduction program is read into a browser and the browser displaying contents is started. A page where an event handler collecting information required for event recording/reproduction is buried is read into the browser displaying the contents. An event is generated by following the event handler in accordance with the browser operation of a user in the browser displaying the contents (830). The event generated by the event recording/reproduction program is recorded and the recorded event is read by the event recording/reproduction program. The browser displaying the contents is operated in accordance with the event which is read.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

This invention relates to a web browser (Web browser).
The present invention relates to an automatic execution system and a method therefor, and more particularly, to an automatic execution system and a method for playing back an operation event recorded by a program for recording / editing / reproducing an operation event to an existing web browser. In the specification of the present application, the term “web browser” refers to Netscape Communicator of Netscape, Inc.
rnet Explorer), which is a browser for viewing typical web content.

[0002]

2. Description of the Related Art Conventionally, the following techniques are known as techniques for recording / reproducing operations on a web. (1) SMIL (Synchronized Multimedia Integration La
nguage) A description language that applies XML1.0, and can synchronize objects of different media such as moving images, sounds, figures, and texts. With SMIL, you can create multimedia presentations that synchronize slides, audio, video, and documents on the web. Real System G2 (RealNetworks RealSystem G2)
Is a streaming media player that supports SMIL. However, this technology does not
Must be written in SMIL and existing HTML (Hyper Text M
arkup Language) Content cannot be used as it is.
In addition, it cannot handle window operations such as changing the size and position of a window for displaying content, and moving the mouse. Furthermore, there is no function of displaying arbitrary figures and characters on a window for displaying contents. (2) SiteCruise / Perso
nal) Web page automatic browsing software by NEC, Inc.
orm Resource Locator) transition and automatic execution of scrolling. The recorded data is called "scenario" and is created and edited by a special editor. This software does not allow you to operate buttons, text fields, radio buttons, and other forms, do window operations, or record and play back mouse movements. Also, since it is necessary to write "scenarios" using a dedicated editor, it is necessary to master the operation of the dedicated editor. Other disadvantages are that software must be installed on the client in advance, and there is no graphic drawing function. (3) VDOLive3.0 This software pushes content to web browsers according to images. A function to read content in synchronization with video is realized. With this software, there is no function to record the browser operation and describe the scenario, there is no function to record / play the window operation to the window that displays the contents or the operation to the form, and there is no drawing function of the figure. . Also, beforehand VDOLive
3.0 must be installed on the system. (4) Lotus ScreenCam Software that records a screen image as it is as a video. Since this software records the screen image as it is, the data size increases. Also, since you are not actually launching the application,
It cannot be used to pause the playback and allow the user to continue the operation from the middle. There is no drawing function for figures.
Cannot edit recorded data. Also, it is necessary to install Lotus ScreenCam in the system in advance. (5) Microsoft Camcord
der) Software that records and plays back a screen image as it is like a video. The features are the same as the Lotus Screencam. (6) VisualAge Test (VisualAge Test) This is a debugging tool made by IBM Corporation, which is a program that supports testing of GUI applications. The visual age test has the functions of a recorder and a player, and the recorder and the player record and reproduce the user's key operation and mouse operation. The operation record is recorded by the recorder in the LotusScript language and stored in a script file. The player can reproduce the user's operation according to the script file. This program cannot record some information about the operation of the web browser. For example, since the operation of clicking the anchor described in HTML cannot be recorded, the transition of the URL cannot be recorded. This is because the information that can be recorded by the visual age test recorder is the standard GUI provided by the OS.
This is because the operation is limited to only the operation on the component. In addition, in the reproduction using the player of the visual age test, the completion of the reading of the content is not confirmed, so that it is not possible to cope with a case where the reading of the content is delayed due to a network environment or the like during the reproduction. Furthermore,
There is no drawing function for figures. Special recording / playback such as variable speed playback or playback of only specific operations cannot be performed.

[0003] As described above, the conventional technology uses the existing HTML.
It does not provide a method for recording and reproducing all operations on a web browser using the content as it is.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic execution system and method for recording / reproducing operations on a web browser (also referred to as browser operations). Another challenge is
An object of the present invention is to provide an automatic execution system and method that do not require installing special software other than a web browser on a client side. Yet another object is to provide a browser operation automatic execution system and method that can respond to changes in the network environment during playback. Another object is to provide a method and a system for realizing an automatic execution type presentation using contents on the web and a cooperative work (collaboration). Yet another object is to provide a browser operation automatic execution system and method capable of recording URL transitions. Another object is to provide a browser operation automatic execution system and method to which a function of drawing a figure is added. Still another object is to provide a browser operation automatic execution system and method capable of performing special recording / reproduction such as variable speed reproduction or reproduction of only a specific operation. Still another object is to provide a browser operation automatic execution system and method that reduce the operation record data size compared to the related art. Yet another object is to provide a browser operation automatic execution system and method that can easily edit recorded data without using a dedicated editor. Another challenge is to create a mechanism for generating events to record and play back web browser operations using HTML.
Is to provide a way to insert it into the file.

[0005]

In order to solve the above-mentioned problems, an event recording / reproducing program is first loaded into a browser, and a browser for displaying contents is started. Next, a page in which an event handler for collecting information necessary for event recording or reproduction is loaded into a browser for displaying the content. Then, an event is generated according to an event handler according to a user's browser operation on a browser that displays the content. The generated event is recorded by an event recording / reproducing program, and the recorded event is read by an event recording / reproducing program. A browser for displaying the content is operated according to the read event.

[0006] The means for activating the browser may activate a browser for displaying the content and activate a browser for reading an event recording / reproducing program. Also, when loading the event recording / playback program into the browser,
First, only the event recording program may be read, and the event reproduction program may be read at the time of reproduction.
Changes can be made as appropriate without avoiding the essence of the present invention. The page with the embedded event handler is preferably
Created by embedding the event handler in the HTML file on the proxy server. The proxy server
A dedicated proxy server may be used, or an ordinary proxy server may embed an event handler. In addition, another program (applet) for embedding the event handler may be prepared. In any case, the present invention can be implemented without departing from the essence of the present invention. All information collected is preferably recorded by a Java applet. Reproduction is performed by controlling a web browser with a Java applet and JavaScript.

FIG. 8 shows a flowchart of event recording. In step 810, a program for event recording is started, and in step 820, a page in which an event handler is embedded is read. Next, in step 830, an event is generated according to the operation of the user. Then, the event generated in step 840 is recorded. FIG. 9 shows a flowchart for executing the recorded event. First, in step 910, the recorded event (event sequence) is read, and in step 920, the operation event (event sequence) is reproduced by the browser.

[0008] A mechanism for generating an event
By inserting it into an HTML file, it is possible to record and play back operations using existing Web content that does not take recording into account (recording aware). By placing both recorded data and software for recording / reproducing on a web server, recording / reproducing is possible in an environment where a web browser can be used. Since all software that records user operations (hereinafter referred to as a recorder) is described in Java applets and JavaScript, no special software other than a web browser is required on the client side. That is, there is no need to install special software other than a web browser on the client side. Further, the recorded data includes only information on the URL of the content and the operation performed by the user, and the data size is smaller than that of the related art. By editing the data to be recorded as a text file, the editing of the recorded data is facilitated. Special operations such as recording / reproducing operations and variable speed reproduction can be performed. Also, a graphic drawing function for arbitrary graphics and characters on existing web content is provided by using a large number of codes common to functions provided by a plurality of web browsers. With such automatic execution function and figure drawing function,
Achieve automatic execution type presentation and collaborative work using contents on the Web.

The information that can be recorded is an operation on a web browser (transition of a URL, an operation on a form such as a text field, a radio button, or a selection list provided by the web content, an operation on a window on which the web content is displayed). Window operation and movement of a pointer (such as a mouse). Furthermore, it provides a function of drawing arbitrary figures and characters on a browser window displaying Web contents, and records this operation.

At the time of reproduction, all recorded operation events can be reproduced. At this time, by proceeding while checking the operation status of the browser, it is possible to cope with a change in the content reading time due to a difference in the network environment or the like. For example, if there is an operational trouble at a kiosk or home banking using a web browser, the problem can be reproduced by playing back the trouble.

Further, by reproducing the recorded operation event in real time via a network, it becomes possible to synchronize the web browsers at a plurality of nodes. For example, a teacher can display and operate the same content for a plurality of students, or draw a character figure to provide education. Further, by controlling the reproduction speed of the recorded content, the type of operation event to be reproduced, and the like, more flexible reproduction becomes possible. For example, by reproducing only the transition of the URL, it becomes possible to cache a plurality of web contents.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a browser operation automatic execution system according to the present invention will be described below. (1) Operation Event Acquisition Function (FIGS. 1 and 2) First, a page of a recorder window for performing a recording operation is read from a web server (FIG. 1).
(1)). The recorder window is the recorder Java
Contains applets and Java applets for communication. These are programs for recording events. The content window is opened by the JavaScript method in this page ((2) in FIG. 1). The content window is a browser window for displaying a web page desired by the user. Therefore, two browsers, a recorder window and a content window, are running. Start the browser (recorder window) that loads the event recording program first, and then start the browser (content window) that displays the content, or start the browser that displays the content and read the event recording program. Is a free choice in implementation, and the preferred one may be selected. When the content window requests the proxy server to read the content (FIG. 1 (3)), the proxy server reads the content from the designated web server (FIG. 1).
(4)) Embed an event handler with the embedded engine (embedding engine) in the read HTML file and return it to the content window (Fig. 1)
(Five)). In the content window, a URL input field may be displayed so that a URL transition can be easily performed.

The embedded event handler notifies the recorder window of an event that has occurred in the content window and information necessary for reproduction. In FIG.
Here is an example of how an event handler is embedded in an HTML file. In this example, when reading of the web page is completed, the event is notified to the recorder window. In FIG. 2, the line with "*" is embedded (the line of the body tag is onLoad = "no
tify ")." notif "in the HTML file of Fig. 2
y () "is a method that notifies events. This" notif
When the y () "method is called, the event information (time, event type, UR
L, title, and last update date) are set and passed to the "record ()" method of the recorder window. Event information is passed to the recorder's Java applet and recorded using the "recorder ()" method.

In JavaScript, the window size changes, the page is read, the button is clicked, and so on.
OnResize, onLoad, onCl for form changes, form submission, mouse movement, etc.
You can define event handlers with ick, onChange, onSubmit, onMouseMove, etc. Thus, the occurrence of necessary information during reproduction can be notified to the recorder window. Information about scrolling is regularly updated in the web browser's window.pageXOffset property and window.pag
Changes can be notified by checking the eYOffset property.

[0015] By automatically embedding the event handler in the proxy server, the user can use the existing content without changing the content. As described above, in JavaScript, event handlers can be defined by onXXX. Therefore, by packaging original content written in HTML, each event handler can be inserted at an appropriate position. If a proxy server with an embedded engine cannot be installed, an applet with an embedded engine is downloaded from a web server, and the event handler is embedded in the HTML file by using the applet as a local proxy server. It is also possible. In addition, by judging that the request is from the content window at the time of the request shown in (3) of FIG. 1, HTML is sent to the general-purpose proxy server.
A function for embedding an event handler in a file may be provided.

(2) Operation Event Recording Function (FIG. 3) Operation event recording is performed by a recorder applet running in a recorder window. In the recorder window, the information notified from the event handler of the content window is selected and formatted, and sent to a local file or a network as needed. Each is shown below. (a) Transmission to the network Send to the network using the communication function of the applet. The recorder does not need to know who or how to use it beyond the network. For example, a program on a web server can receive it and publish it on the web server as it is, or a player running on another node can receive it and synchronize the web browser in real time. It is. However, due to the security restrictions of the applet, the applet can establish a communication connection only with the server from which the applet has been downloaded (hereinafter, its own server). To establish a communication connection with other nodes, it is possible to place a relay program on its own server or to attach a digital signature to an applet. (b) Recording to a local file
Can be recorded in a file.

(3) Graphic Drawing Function (FIG. 4) The graphic drawing function is realized by using DynamicHTML functions. The graphic drawing function of the present invention is implemented differently between a Netscape Communicator (NC) and an Internet Explorer (IE). This is the Dynami that both employ
This is because cHTML is not compatible. FIG. 4A shows an implementation method using the NC. With the movement of the mouse pointer, layers with small square images are created one by one on the content window. (You may create a colored layer.) Create image d1 on layer 1 and image d2 on layer 2. By continuing this, a figure as shown in FIG. 4B can be created. The movement of the mouse pointer is realized by recording the movement of the mouse pointer by a mouse event, creating a layer on the content window where the mouse pointer has passed, and pasting an image of the mouse pointer. Also, since IE does not support layers, paste the image using the JavaScript method "insertAdjacentHTML ()" provided by IE where the mouse pointer passes, and adjust the position using the style sheet function .

(4) Operation event reading function (FIG. 5) Operation event reading is performed by a network or local
From a file. (a) Reading from the network The operation event sequence published on the web server can be downloaded using a protocol such as HTTP in the same manner as ordinary web content. (c) Reading from a local file An applet with a digital signature can read from a local file.

(5) Operation Event Playback Function (FIG. 5) The operation of the content window is performed by a Java applet and JavaScript running on the recorder window. Time management is performed by Java applet.

(5-1) Operation of the content window When the recorder window opens the content window ((2) in FIG. 1), by giving a name to the content window, the content window can be changed from the content window to the content window. Can be controlled using JavaScript methods. The recorder applet calls the JavaScript method of the recorder window during playback, from which the Ja
Control the content window with vaScript.
If the content window is given the name "win", resizing and moving the window is done using JavaSc
It can be played with ript's win.resizeTo (x, y) and win.moveTo (x, y) methods. The URL transition is shown in the document.location.href property in the content window.
Can be reproduced by substituting However, the document.location.href property of the content window cannot be changed directly from the recorder window due to browser security. Therefore, document.loc is added to the content window in advance by the embedded engine shown in Fig. 1.
Embed a method to change the ation.href property and call the method from the recorder to get the URL
Play transitions. As described above, the operation event can be reproduced by using the JavaScript method.

(5-2) Time Management (FIG. 6) During normal reproduction, events are reproduced so that the time between events becomes the same as during recording. However, depending on the state of the network or the like, the reading time (Loding Time) of the web content may greatly change. Loading time of the web content, as shown in FIG. 6 (A), the time T ₁ of the period from load start event to load end event. As shown in FIG. 6B, at the time of reproduction, the player reads the next page with the content
When you instruct the window, wait from without content windows related to the read time T ₃ at the time of recording until it receives a load end event. In addition, the operation A performed before the load end event at the time of recording may not be able to be operated unless reading is completed. Therefore, at the time of reproduction, the operation A is performed immediately after receiving the load end event from the content window. In normal speed playback, the display time (Brows
by the same length as the ing Time) T ₂ to display the web page.
That is, T ₄ = T ₂ in FIG.

(5-3) Special reproduction (a) Selection of reproduction information At the time of reproduction, the type of information to be reproduced can be selected. This makes it possible to make settings such as reproducing only the URL transition or not reproducing only the operation of the mouse. (b) Setting of playback start point It is possible to play from any web page loading event. (c) Variable speed playback In order to change the playback speed, the display time in FIG. 6 is adjusted. In the case of 2x speed playback, the time until the reading time (Loading Time) is not changed, and the display time during playback (BrowsingTime)
Halved. That, and T ₄ = T _2/2. (d) QoS control during real-time playback In the case of real-time playback, there is a risk that the playback side will lag behind the recording side due to network delays. Therefore, on the reproducing side, a threshold value for allowing a delay is determined for each type of information to be reproduced, and whether or not to reproduce at the time of reproducing is determined, so that the balance between the reproduction delay and the reproducing accuracy can be adjusted. Even if all the recorded information is not reproduced, the reproduction side will be in the same state when the next URL is read.

FIG. 7 shows a hardware configuration example of a system for automatically executing a browser operation according to the present invention. System 1
Reference numeral 00 includes a central processing unit (CPU) 1 and a memory 4. The CPU 1 and the memory 4 are connected via the bus 2 to a hard disk device 13 (or M
O, CD-ROM 23, storage medium drive such as DVD)
And an IDE controller 25. Similarly, the CPU 1 and the memory 4 are connected via the bus 2 to the hard disk device 30 (or the MO 28,
Storage medium drive for CD-ROM 23, DVD, etc.) and S
It is connected via the CSI controller 27. The floppy disk device 20 is connected to the bus 2 via a floppy disk controller 19.

A floppy disk is inserted into the floppy disk device 20, and the floppy disk or the like or the hard disk device 13 (or MO, CD-ROM,
A storage medium such as a DVD) and a ROM 14 can cooperate with an operating system to give instructions to a CPU and the like, and record computer program codes or data for implementing the present invention. It is performed by being done. The computer program includes an OS, applications such as a browser (NC, IE), and other programs. The code of the computer program can be compressed or divided into a plurality of pieces and recorded on a plurality of media.

The system 100 further comprises user interface hardware and a pointing device (mouse, joystick, etc.) for inputting.
7 or a keyboard 6 and a display 12 for presenting visual data to the user. Further, it is possible to connect a printer via the parallel port 16 and to connect a modem via the serial port 15. The system 100 is connected to a network via a serial port 15 and a modem or a communication adapter 18 (Ethernet or token ring card) or the like, and communicates with another computer or the like. For example, it communicates with a web server, a proxy server, and the like. It is also possible to connect a remote transmission / reception device to the serial port 15 or the parallel port 16 to transmit / receive data by infrared rays or radio waves. The web server and the proxy server correspond to the system 100
The configuration may be the same as that described above, or dedicated hardware may be used.

The speaker 23 receives via the amplifier 22 the audio signal that has been D / A (digital / analog converted) by the audio controller 21 and outputs it as audio. Also, the audio controller 21
Converts the audio information received from the microphone 24 into an A / D
(Analog / Digital) conversion, and audio information outside the system can be taken into the system.

As described above, the system of the present invention has various home electric appliances such as a normal personal computer (PC), a workstation, a notebook PC, a palmtop PC, a network computer, a television with a built-in computer, and a communication function. Game console, telephone, FA
It can be easily understood that the present invention can be implemented by a communication terminal having a communication function including X, a mobile phone, a PHS, an electronic organizer, or the like, or a combination thereof. However, these components are merely examples, and not all of them are essential components of the present invention.

[0028]

According to the present invention, an automatic execution type presentation package using web contents can be easily created by recording an operation on an existing web browser. All recorders that record are written in Java applets and JavaScript, so no special software other than a web browser is required on the client side. By proceeding while checking the operation status of the web browser at the time of reproduction, it is possible to cope with a change in content reading time due to a difference in network environment and the like. Providing a graphic drawing function on a window for displaying web contents enables more flexible presentation. By playing back the recorded operation events in real time via a network, it becomes possible to synchronize web browsers at a plurality of nodes. By controlling the playback speed of the recorded content, the type of operation event to be played back, and the like, more flexible playback becomes possible. For example, by reproducing only the transition of the URL, it becomes possible to cache a plurality of web contents.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a method of acquiring an operation event.

FIG. 2 is a diagram illustrating an example of embedding an event handler in HTML.

FIG. 3 is a diagram illustrating an operation event recording function.

FIG. 4 is a diagram illustrating a graphic drawing function.

FIG. 5 is a diagram illustrating an operation event reading / reproducing function.

FIG. 6 is a diagram illustrating time management during reproduction.

FIG. 7 is a diagram showing one embodiment of hardware used in the automatic execution system of the present invention.

FIG. 8 is a flowchart of event recording according to the present invention.

FIG. 9 is a recording event execution flowchart of the present invention.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yoshinori Aoki 1623-14 Shimotsuruma, Yamato-shi, Kanagawa Prefecture Inside the Tokyo Research Laboratory, IBM Japan, Ltd. (72) Inventor Shiro Ando Shimotsuruma, Yamato-shi, Kanagawa Prefecture 1623-14 Japan IBM Japan, Ltd.Tokyo Basic Research Laboratories (72) Inventor Shu Nakajima 1623 Shimotsuruma, Yamato-shi, Kanagawa Prefecture Japan IBM Japan, Ltd.Tokyo Basic Research Laboratory F-term ( Reference) 5B042 GA09 GB02 HH30 JJ10 LA19 MA05 MA08 MC37 NN29 5B075 KK02 ND16 PP03 PQ02

Claims (16)

[Claims] 1. An operation event recording system for recording a browser operation, comprising: (1) means for activating a browser for reading an event recording program and activating a browser for displaying content; and (2) displaying the content. Means for reading a page in which an event handler for collecting information necessary for event recording is read in a browser to be executed; and (3) in response to a user's browser operation on a browser for displaying the content, an event is generated in accordance with the event handler. An operation event recording system, comprising: means for generating; and (4) means for recording the generated event by the event recording program. 2. The system according to claim 1, wherein said means for activating said browser is means for activating a browser for displaying contents and activating a browser for reading an event recording program. 3. An automatic execution system for automatically executing a browser operation, comprising: (1) means for reading an event recording / reproducing program into a browser and activating a browser for displaying the content; and (2) displaying the content. Means for reading a page in which an event handler for collecting information necessary for event recording or reproduction is read in a browser to be executed; and (3) in accordance with the event handler in accordance with a user's browser operation in a browser for displaying the content, Means for generating an event, (4) means for recording the event generated by the event recording / reproduction program, and (5) means for reading the recorded event by the event recording / reproduction program.
(6) means for operating a browser that displays the content in response to the read event. 4. The means (1) for activating a browser activates a browser for displaying contents, and executes event recording /
4. The system according to claim 3, wherein the system is means for activating a browser that reads a reproduction program. 5. The method according to claim 1, wherein the means for recording the event comprises:
L transition, movement of the pointer, operation on a form such as a text field or a radio button or a selection list provided by web content, including a window operation on a browser that displays the content, a means for recording the operation, The system according to claim 1. 6. The system according to claim 1, wherein the means for recording the event is a means for recording only an event of a specific operation on a browser that displays the content. 7. The method according to claim 1, wherein the means for recording the event includes means for recording an event of a character or graphic drawing operation on a browser for displaying the content. system. 8. The system according to claim 3, wherein the means for operating a browser for displaying the content includes means for performing variable speed playback or playback of only a specific operation. 9. The system according to claim 1, wherein said event recording means records said event in a text file. 10. The system according to claim 9, wherein the means for operating the content window includes means for editing the text file to change a reproduction operation of a browser. 11. An operation event recording method for recording a browser operation, comprising: (1) activating a browser for reading an event recording program and activating a browser for displaying content; and (2) displaying the content. Loading a page with an event handler that collects information needed for event recording into a browser
(3) generating an event according to the event handler according to a user's browser operation on a browser that displays the content; and (4) recording the generated event by the event recording program. An operation event recording method, characterized in that: 12. The method according to claim 1, wherein the step of activating the browser comprises:
This is the stage of launching the browser that displays the content and launching the browser that loads the event recording program.
The method of claim 11. 13. An automatic execution method for automatically executing a browser operation, comprising: (1) loading an event recording / playback program into a browser and activating a browser for displaying the content; and (2) displaying the content. Loading a page in which an event handler for collecting information necessary for event recording or reproduction is loaded into a browser to perform (3) responding to a user's browser operation on a browser for displaying the content, in accordance with the event handler, Generating an event, (4) recording the generated event by the event recording / playback program, and (5) reading the recorded event by the event recording / playback program.
(6) operating a browser that displays the content in response to the read event. 14. The method according to claim 1, wherein the step of activating the browser comprises:
14. The method of claim 13, further comprising activating a browser that displays the content and activating a browser that loads an event recording / playback program. 15. A medium including a program for recording a browser operation, the program comprising: (1) a function of activating a browser for reading an event recording program and activating a browser for displaying contents; A) a function for reading a page in which an event handler for collecting information necessary for event recording is loaded into a browser for displaying the content, and (3) a function for reading the event in response to a user's browser operation on the browser for displaying the content. A medium including a program, comprising: a function of generating an event according to a handler; and (4) a function of recording the generated event by the event recording program. 16. A medium including a program for automatically executing a browser operation, the program comprising: (1) a function of reading an event recording / reproducing program into a browser and activating a browser for displaying contents; 2)
A function of reading a page in which an event handler for collecting information necessary for event recording or reproduction is loaded into a browser that displays the content, and (3) the browser that displays the content in response to a user's browser operation. A function of generating an event according to an event handler; (4) a function of recording the generated event by the event recording / reproducing program;
(5) A program comprising: a function of reading a recorded event by the event recording / reproducing program; and (6) a function of operating a browser that displays the content according to the read event. A medium containing