IE security issue on page opening from javascript

Question

I have a Java web application running in JBOSS with Tomcat with two web applications running on it (contexts).

Pressing a button on one of the opened applications launches the javascript command to open a new window with a page from another.

The problem that I seem to encounter is that there is a security warning in IE. with the following message:

I can not ask my client to add an exception to "http: //", what are the probable reasons for him not to raise the site?

The browser correctly displays the full URL of the page (for example, www.something.net:8080/blah/somepage.jsp), IE7 browser with enhanced security works in Windows 2003.

Answer 1

IE . , SKU, ESC.

? window.open("http://fullURL", etc), - var v=window.open("about:blank"); v.location.href=etc?

Answer 2

"Explorer Enhanced Security", Windows Servers, IE .:)

.

Answer 3

? IE .

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EDIT: Windows Server 2003, , , - . , .

Edit2: , , .
: http://support.microsoft.com/kb/815141 . , , .