Load page in popup window with different (from parent page) browser

Question

Hi,
Environment: Windows XP or Windows 7, Visual Studio 2010, Internet Explorer 8 (IE)
I have an application which opens page containing HTML editor.  Here you can edit a document (pooled from db). Next, btnPreview opens a new popup window and shows changes you made via Internet Explorer (IE - default browser).
Here is original code - works OK when you run from both - VS 2010 (http://localhost:50827/NCSite/MenuEditor.aspx) or via browser IE (http://localhost/NCSite/MenuEditor.aspx).
Please pay attention - with VS2010 was used a dynamic address (localhost:50827) created by VS2010
Here is a code I used for that:
URL = Request.Url.Scheme +
"://" + Request.Url.Host + appPath + URL;
ClientScriptManager cs = Page.ClientScript;
cs.RegisterStartupScript(this.GetType(),
"NewWindow",
"<script>window.open('" + URL +
"', 'New')</script>");
Now I have a request to add two more buttons to preview in Google Chrome (GC) and Mozilla Firefox (FF).
I used next code:
using System.Diagnostics;
//for btnIE:
URL = Request.Url.Scheme +
"://" + Request.Url.Host + appPath + URL;
Process.Start("iexplore",
URL);
//for btnGC:
URL = Request.Url.Scheme +
"://" + Request.Url.Host + appPath + URL; 
Process.Start("chrome",
URL);
//for btnFF:
URL = Request.Url.Scheme +
"://" + Request.Url.Host + appPath + URL; 
Process.Start("firefox",
URL);
It works OK when you run from VS2010 (http://localhost:50827/NCSite/MenuEditor.aspx)
but when you open application via default browser (IE) and after editing document press btnIE, btnGC, or btnFF it is not creating a new popup window and simply replacing existing window
and shows updated document via IE.  Processes for GC and FF not even started (looked through Task Manager).
Is it any way to solve that issue?
Thanks,
Dm
dmirkin

Answer 1

Hi dmirkin,
If Andy's suggestion still cann't resovle your issue.
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