How to Call CGI from Javascript

[rstambach]

I've got a hardware device that's controlled by a cgi server and if I use the following html it will turn on a cooling fan.

<div id="layer3" style="position:absolute; top:338; left:34; z-index:9;" ><A href=/rc.cgi?o=1,1 target="empty"><img id="FanPic" onclick = "ChangeFanState();" src="Fan&LIO(1,"%u",1);.gif" border=0 height="72" width="72"/></div>

I'd like to be able to do this from javascript so as to turn on several devices with out changing the web page. So I've tried

window.location.href = "/rc.cgi?o=1,1";

but this is not working.
Any ideas?Thanks

 

[rstambach]

I think I got this to work by adding

http://servername/path/rc.cgi?o=1,1

I also use DHTML tag
&LIO(1,"%u",1)
to read the relay to see if its on or off and I need to set its value as a variable in my javascript but I can't seem to get anything to work.