This is just a concept of how this can be done using Child Windows. It is buggy as it comes and I suspect that it may need some GUISwitch()ing done. Sometimes it works as expected and sometimes you have to play around clicking the outer tabs to get it to switch. I really don't have the time right now to go further with this so if anyone wants to pick it up then fly at it. I only request that modifications are posted in this thread. Edit: Code removed, See ReFrans example for functional c