I am using the following url to display an excel document in the browser:
sharepoint-server:29769/_layouts/xlviewer.aspx?id=http://sharepoint-server:29769/Documents/Cancer/Graphs.xlsx&range=Brain!A4
The problem I'm having is that when I load the url in the browser it returns a download dialog box as opposed to displaying the excel document in the broswer(IE7). What I had noticed is that if I point the id parameter to a url that does not contain a port number it seems to work. Unfortunately at this moment in time I'm unable to have the address put on port 80 and need to fix the issue fairly quickly.
Any tips would be much appreciated. Thanks.