Simulate submit button click and display result page in new webport tab

Hello,

At some point in a protocol I call another protocol that returns a value I can use in a javascript function. At the end of this function I simulate a click on the "submit button" through the following instruction : "document.getElementById('ACSform2').submit();"

This seems to work as a click on submit except that the output of the called protocol is not displayed in a new tab but erase the current page. So what can I do to get the output in a new tab?

Thanks

florent