Browser popup blocker blocking jasper reports generated from flex

I have a flex application that uses navigateToURL() to call a servlet. The servlet in turn generates a JasperReport and then uses exportReport() to show the report in a new browser tab.

Now, my problem is this. I want to generate multiple reports at once, each opening in its own tab. It all works fine except that in Firefox the built in browser pop-up blocker sees every new tab that is opened after the first report tab as a pop-up. It blocks this and is giving me endless headaches.

I also tried this in IE8, Safari, Chrome and Opera with no problems.

Any help as to how I can get past the Firefox pop-up blocker would be much appreciated.

UPDATE:

I use a timer in the loop that I use to fire calls to the servlet. Reason for this is that without the delay from the timer the servlet gets hit too fast for the reports to generate. Coul开发者_如何学Pythond it be that the browser sees the timer as malicious and therefor blocks all popups after the first one?