Open in a new browser tab a zul page

what exactly do you mean? a link or button on your page what opens a new page in a new tab?

here a quick example of a link allowing to open in a new tab http://zkfiddle.org/sample/2pb5975/1-direct-link-to-another-zul-page maybe it's as simple as that

Thanks for the answer @cor3000. I've already tried it but the problem is that my main page is the index.zul and when I click on each menuitem we just change the contents of a div(include) and if I use href it loads the entire page.

seems I misunderstood your initial request... Can you provide me an exact example of how this should work at HTML/Javascript level? Then I'll see which existing feature or integration strategy works best in ZK. Also a live example on an existing website might be helpful.