Tabbar - tab spacing remains when hiding all tabs..

I’m wanting to hide all of my tabs, but when doing so, the tab line area is still visible. How can I hide the tab line area to not show and move the tab content area up?

There isn’t such a public functionality.

However, you may try to use the following:
tabbar._tabZone.style.display = “none”;
var ch = document.getElementById(“a_tabbar”).firstChild.childNodes;
for(var i =0 ; i < ch.length; i++)
ch[i].style.top = “0px”;