Script action:Adds the 
[to] button 
to the right of ( 
posts q & a blogs of company events [to] )
Clicking on 
[k] hides the right column and stretches the center one.
Pressing again - returns everything as it was.
The script works on all pages except 
habrahabr.ru/events *
The functionality of the site is not broken.
At least it will be useful for small monitors or when the browser width is> 730px.
Who needs a script - 
take itSource code')
Installation:
 - just press " 
take away " + press a couple of buttons

 - Provided the Adase 
Greasemonkey is installed, see the installation as for 


 - download the script by the " 
take away " link.
Put the script in any empty folder and specify the path to:
Tools - Quick Settings (F12) - Site Settings - Scripts
Thank you all for thanks =)!
Upd 1:Update script to v0.3.1
Now Habr is stretched and on the big screens.
Upd 2:Update script to v0.3.2
Removed all consile.log ();
Upd 3:Update script to v0.3.4
Now you can add your css styles to the variable hideStyle
Upd 4:Update script to v0.4
Now the script works on the new Habr.
Upd 5:Update the script to v0.4.1
Css bug fixed
Reinstall the script.