How to hide Development Tools subpane with Net,CSS,JS,Secur?

[thoste]

Assume I load a web page, then right click an a text and select "Inspect Element".
The Development Tools subpane opens at the bottom.

Thats ok so far.

But sometimes after working in this subpane a second subpane opens below the previous one.
This second subpane contains tabs with labels Net, CSS, JS, Security, Logging, Server

How can I hide this subpane again?

Ther eis no "x" to close it.

Thomas

[morat]

You can close the split console by clicking the toggle split console button or pressing the escape key.

http://developer.mozilla.org/en-US/docs ... it_console

Is the devtools.webconsole.new-frontend-enabled pref false? (default true)

That pref makes the web console look like the browser console.

[thoste]

it works.
Thank you