> Hi Stefan, thanks for the quick reply. I guess my question was not clear enough.
> 
> My aim is to create a button which mimics the "Start/Stop" button functionality in the
> "Programs" page where we start all the front-ends for the various equipment. The idea is that
> the user will use a simple interface in a custom page (not the status page) which sets up the
> equipment needed for a specific type of measurement.

All functions in midas are controlled through special URLs. So the URL

http://<host:port>/?cmd=Start&value=10

will start run #10. Similarly with ?cmd=Stop. Now all you need is to set up a custom button, and use the 
OnClick="" JavaScript method to fire off an Ajax request with the above URL. 

To send an Ajax request, you can use the function XMLHttpRequestGeneric which ships as part of midas in the 
mhttpd.js file. Then the code would be

<input type="button" onclick="start()">

and in your JavaScript code:

...
function start()
{
   var request = XMLHttpRequestGeneric();

   url = '?cmd=Start&value=10';
   request.open('GET', url, false);
   request.send(null);
}
...


Cheers,
Stefan