06 Jan

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Scanstyles does nothing in Webkit/Firefox/Opera – Fix

I had a client contact me with an email containing the following screenshot of a popup which has suddenly appeared when viewing their website with certain browsers – a website which has been up and live for over 12 months with no issues.

Scanstyles does nothing in Webkit/Firefox/Opera

Looking around the web I found out that the issue was caused with both an Internet Explorer update and a jQuery plugin called ‘curvycorners‘ which I use for sorting the CSS3 border-radius compatibility issue with older browsers.

Apparently back in November 2013 Microsoft released an update for Internet Explorer which changed its user agent from

Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)


Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv 11.0) like Gecko

With the big noticeable change being the missing MSIE which has been around for years. Several website scripts, whether they be the likes of php or javascript detect this value in the user agent details to control such things as browser compatibility for websites.

The problem script was the previous mentioned curvycorners that was causing the popup ‘Scanstyles does nothing in Webkit/Firefox/Opera’.

The fix that I found was to simply note out the following content in the curvycorners.js file, so change this…

.. to this.

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Written by me@grafxflow

I am a freelance designer and developer of all things web - from CSS3 bootstrap responsive layouts through to WordPress and MVC CodeIgniter. I blog and tweet to hopefully share a little bit of knowledge that can help others around the web. Thanks for stopping by!

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9 Thoughts on "Scanstyles does nothing in Webkit/Firefox/Opera – Fix"

  1. 21 Apr


    ok this looks useful.
    everytime I try to access something in my dns 320 page this error comes out.
    where to I insert this is info u writing?

  2. 21 Apr


    If you find the curvycorners.js file and make the above amend it will stop the error message appearing.

  3. 6 Jun


    I made the suggest change in the curvycorners.js file and the annoying popup has gone. I appreciate your help.

  4. 6 Jun


    Always glad to help.

  5. 16 Aug


    I am not sure how to how to find the curvycorners.js file. When I do, do I type in the content you have on line 3? Sorry to be so dumb.

  6. 16 Aug


    Hi Carol,

    The file should be in a folder called something like ‘js’ or ‘javascript’. Best way to find out is by using your browser to view the source code.

    Once you find the file just replace the line


    Hope this helps.

  7. 17 Oct


    why is every time I log onto a web site and I get the message”scanstyles does nothing in webkit/firefox/opera” how can I get rid of this

  8. 17 Oct


    If it’s your own website then you can change the above code – but if not I am afraid it’s the website(s) owners/developers who needs to update their code accordingly.

  9. 2 Nov

    Cor van Dijk

    Used software Joomla 3.3.6 and swMenuFree 8.3

    The words you give I could not find in both files.

    I found the phrase in curvycorners.src.js what is almost simular; in Line 1449

    I changed it to:

    Thank you for the given solution me@grafxflow!

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