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The Javascript that opens a small window is very standard -- and as far as I know it is universally supported by all javascript enabled browsers. The fact that IE on PC is not working makes me suspect something other than a javascript/browser problem. Because a "new window" is also what is commonly called a "pop-up window" there is a good chance that the new window is being blocked by a security setting in IE, or a pop-up blocking utility on that specific computer you tested with.
To be sure of this, can you post in the code for the function itself? Clean out any specifics in the code that show the domain name by replacing the actual domain with "example.com"