Hi,
Please clear the Chrome CACHE and re-visit your website (with Chrome). Because this is how i see your website with Chrome:
Attachment Pasted_Image_2_10_14__5_18_PM-2.png not found
And i am using the latest Chrome version:
Attachment ScreenShot2014-02-10at5.18.37PM.png not found
I also noticed one thing. You took screenshot of INDUSTRIAL menu item (in firefox and IE) but took the screenshot of LABORATORY in Chrome. Take a close look at your screenshots.
LABORATORY already has 1 column so it has 1 column in all browsers (chrome, IE, firefox, Safari).
Regards,
Support