Button click without "refresh" the current page. Please help

Hi everyone:
Here is my code:
Code:
<HTML>
<HEAD>
<TITLE>Parallel Port</TITLE>
</HEAD>
<BODY>
<H1 ALIGN="CENTER">On/Off Bit0 of server's parallel port</H1>
<form name="myform" action="robotcontrol.jsp" method="POST">
<input type="hidden" name="action" value="<%=action%>">
<INPUT TYPE="SUBMIT" VALUE="set/reset">
<jsp:include page="./VideoToApplet/htmlroot/index.html" flush="true" />
</form>
</BODY>
</HTML>
everytime i click the button, it will perform (set/reset) parallel port, and i have include a html page which consist a video streaming applet.Maybe cause of this:
<form name="myform" action="robotcontrol.jsp" method="POST">
So.. please help !! Thanks in advance.
but unfortunately, everytime i click on the button, it will likely refresh the page, and the applet will auto reconnect to camera,(it take time to reconnect)..

Inside the body of JSP/HTML page, at the end of <BODY>, paste this small script.It will refresh your page automatically after 20 seconds, that is nothing but the value assigned to V.You can assign the time interval as you wish.
<SCRIPT language="javascript">
     var ONESEC = 1000 ;                    // One second (in ms)
     var V = 20 * ONESEC ;
     var ONEMIN = 60 * ONESEC ;     // One minute (in ms)
     var INTERVAL = 1 * ONEMIN ;               // How often is page refreshed (in ms)
     window.setTimeout(function(){
                                        window.location.reload() ;
                                        },V) ;
</SCRIPT>

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these are the codes, by clicking the "FCFS" button it will generate another frame and from that frame another button will be pressed "accept" and it will go to another frame....
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please help me revise my program, im almost done, i just nid to set the progress bar that it will run according to the waiting time, or set the progress bar to run in order.. these are the variable names of the progress bar(current1, then current2, then current3 then current4).
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                    blank23= new JLabel("");
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Button click without "refresh" the current page. Please help

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