hi fallen one,
I have to answer this with "I'm not sure"

if you are using MS's implementation of javascript, jscript, you can use the run command of the windows script host as follows (found in another forum via Google):
try{var wsh = new ActiveXObject('WScript.Shell');} catch(err){}
This will prompt user to enable ActiveX.
Then you can run any of the command using:
replacing notepad.exe with my app. with parameters
should work; I haven't tried this myself though as I'm not really a javascript person

[plug]It's only $5 so I wouldn't think it'll break the bank if you tried it to find out; if it doesn't work, you can shelve it in case you need it for later[/plug]

This is assuming that your html/javascript is for windows os machines as my app only works on these systems and not linux, or mac os, etc.
I would suggest you try the above code snippets to see if this is indeed possible and then decide if this method is able to be worked into your games.
The scoreboard size can be customised to have has a reasonably small minimum size that takes up just over the size of the scoreboard table if you use dummy banners that are very small.
these items are centered on the displayed page/screen so can be quite small. check the example game scoreboard table (
MyGame) to see if it meets your size requirements.
btw, as mentioned in a previous post, you can disable the display of the flags column, which will further reduce the footprint of the scoreboard.
p.s. another version (using a different method) I found on the net via Google:
<script type="text/JScript">
function Launch(){
var v;
v = new ActiveXObject("Shell.Application");
v.ShellExecute("some-file-name.exe", "", "C:\\some-folder\\a-subfolder", "open", 10);}
</script>
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