Apparently a feature in IE7 involves blocking what it considers pop up 
content. As it often typical of Microsoft, it's interpretation of what 
is pop up one moment differs from the next.



Ever since "allowing" pop up content from the root level of the domain 
that uses webmail the problem has all but disappeared. So at present 
this problem is 99% solved. I can deal with a 1% error rate.



If I can isolate the problem further I will post again.

Have you checked the javascript console? Why is this in the Horde 
queue instead of IMP? What browser(s) have you tested?

When I click on them nothing happens. I have to close one instance of 
webmail first then reload the screen to get functionality back for the 
following items (I haven't tested others since they are not normally 
used by me):



Delete | Reply | Reply to All | Forward



Also the top menu for Compose.



I know from coding webpages if you use the same same name for 
different things it can cause problems. Sorry if I didn't describe it 
well but that's what has happened before. I had to generate unique 
variable names and how I did it was by doing what I described initially.



So if it doesn't apply to Horde please ignore, but what I was trying 
to describe was a valid solution to situations I've encountered before.



Thank you for looking into it, please let me know if there's anything 
else i can provide.

Can you explain why this is in the Horde queue instead of IMP?
Please be more specific than "fail". What happens? Do you get a 
javascript error?
No, that's not how javascript works.

When I have two different webmail accounts open (different servers) 
but in the same browser the reply to script (and other "new window" 
buttons) fail because there is more than one instance calling the same 
script.



I suggest making the scripts unique to the instance of webmail/Horde 
that is open so a new window opening knows which instance it pertains 
to thereby avoiding the resulting "disabling reply to" entirely.



NOTE: "New Mail" in the left hand column works but not in the message 
view or top menu and none of the other functions in line with reply to 
work when these conditions are true.



I know how I'd do it, so I'm including that method here in case it 
helps describe the issue better. This may address other issues I am 
unaware of.



If the server I log on to is webmail.ideally.com it would be a simple 
matter to dynamically add "ideally" to the keywords used in the 
javascript so that two instances result in unique javascript calls 
instead of both calling the same variables thereby cancelling each 
other.



EXAMPLE: webmail.ideally.com opens one instance, 
webmail.futuristic.com opens another.



In the scripts providing functionality there might be a var or 
function call like:



var x = 1

function y



But since it is the same for both instances = ERROR



Dynamically generating the scripts would result in scripts with var 
and functions of:



var x_ideally = 1

function y_ideally



var x_futuristic = 1

function y_futuristic



WARNING: This solution and estimation of the problem is sadly only a 
cursory analysis. If this ISN'T why I can't reply to one message when 
multiple instances of Horde is running I apologize and this should be 
relegated to a BUG report.



Please let me know if there's anything I can do to help.