It's very simple, I used WinHTTrack to download my DCS-932L's website files, eg. LanIP/jview.htm and many more ..
I have no experience with HTML.
But, I made this little code to my DCS-932L. 
<!-- Minus AutoDato -->
<html>
<head>
<title>DCS-932 by Smokers' Choice!</title>
<meta name="Generator" content="Stone's WebWriter 4">
<SCRIPT LANGUAGE="JavaScript">
function Init() {
    window.setInterval("ShowFrameRate()", 1000)
    
    if (1) {
       audioon.disabled = false;
       audiooff.disabled = false;
    } else {
       audioon.disabled = true;
       audiooff.disabled = true;
    }
    if (0 == 1) {
       nightmodeon.disabled = false;
       nightmodeoff.disabled = false;
    } else {
       nightmodeon.disabled = true;
       nightmodeoff.disabled = true;
    }
}
function ShowFrameRate() {
    if (1)
    {
       var fFrameRate = cvcs.GetFrameRate()
       window.status = "Frame:" + fFrameRate.toString() + " fps"
       if (0)
          CurrentFrame.innerHTML = "Frame:" + fFrameRate.toString() + " fps"
    }
    cvcs.GetRealTimeData() 
    CurrentTime.innerHTML = cvcs.GetTimeString()
} 
function SubmitAudioOn()
{
    bn = navigator.appName;
    un = navigator.userAgent;
    brower = 0;	
    if (bn.indexOf("Microsoft Internet Explorer",0) != -1)
       brower = 1;
    if (bn.indexOf("Opera",0) != -1)		// Opera
       brower = 2;
    if (bn.indexOf("Netscape",0) != -1)
    {
       if (un.indexOf("Firefox",0) != -1)
       {
          if (un.indexOf("Navigator",0) != -1)	// Nescape
             brower = 2;
          else 
             brower = 1;			// FireFox
       }
       else
          brower = 2;				// Nescape or Other
    }
 
    if (brower != 1)
       javascript:document.forms[0].submit();
    else
       cvcs.SetSound(1);
}
 
function SubmitAudioOff()
{
    bn = navigator.appName;
    un = navigator.userAgent;
    brower = 0;	
    if (bn.indexOf("Microsoft Internet Explorer",0) != -1)	// IE 
       brower = 1;
    if (bn.indexOf("Opera",0) != -1)		// Opera
       brower = 2;
    if (bn.indexOf("Netscape",0) != -1)
    {
       if (un.indexOf("Firefox",0) != -1)
       {
          if (un.indexOf("Navigator",0) != -1)	// Nescape
             brower = 2;
          else 
             brower = 1;			// FireFox
       }
       else
          brower = 2;				// Nescape or Other
    }
 
    if (brower != 1)
       javascript:document.forms[1].submit();
    else
       cvcs.SetSound(0);
}
function SubmitNightModeOn()
{
    javascript:document.forms[2].submit();
}
function SubmitNightModeOff()
{
    javascript:document.forms[3].submit();
}
</script>
</head>
<body topmargin="1" leftmargin="0" rightmargin="0>
<tr>
            <td colspan=2 align=MIDDLE bgcolor="white">
              <APPLET name="cvcs" CODEBASE="http://10.20.30.10/" CODE="aplug.class" WIDTH=640 HEIGHT=480>
              <param name="RemotePort" value=80>
              <param name="Timeout" value=5000>
              <param name="RotateAngle" value=0>
              <param name="PreviewFrameRate" value=20>
              <param name="DeviceSerialNo" value="YourDeviceSerialNoHere!">
              </APPLET>
            </td>
          </tr>
<div>        
<tr align=BOTTOM>
<td align=BOTTOM>
  Audio :
          <INPUT id="audioon" type=button style="width:35px" value='ON'  onClick="SubmitAudioOn()">
          <INPUT id="audiooff" type=button style="width:35px" value='OFF' onClick="SubmitAudioOff()">
            Day/Night Mode :
<INPUT id="nightmodeon" type=button style="width:45px" value='Night'  onClick="SubmitNightModeOn()">
<INPUT id="nightmodeoff" type=button style="width45px" value='Day' onClick="SubmitNightModeOff()">
            <SPAN ID="CurrentFrame"></SPAN>
        </td>
</tr>
    </div> 
 <!-- === END MAINCONTENT === -->
</body>
<form action="http://10.20.30.10/audiocontrol.cgi" method="POST">
<INPUT type="hidden" name="AudioMute" value="0">
</form>
 
<form action="http://10.20.30.10/audiocontrol.cgi" method="POST">
<INPUT type="hidden" name="AudioMute" value="1">
</form>
<form action="http://10.20.30.10/nightmodecontrol.cgi" method="POST">
<INPUT type="hidden" name="IRLed" value="1">
</form>
 
<form action="http://10.20.30.10/nightmodecontrol.cgi" method="POST">
<INPUT type="hidden" name="IRLed" value="0">
</form>
</html>