System which can manage 5 web site

[dexterMVP]

I have developed 5 websites. All the websites are exactly identical apart from the logo, some colours, copyright, etc.

I want to develop a system, which can change some elements on all 5 of the websites at the same time.

What would be the best approach to achieve this? Can this be achieved in HTML/CSS/JS.

I cant use PHP for technical reasons.

I've read on the Internet that this can be developed using PHP. However, I am not very familiar with PHP.

I've also tried to make a general Index but I don't know how to.

[nomad]

Yes create a Template using HTML and css5.
If you have DreamWeaver this would be an easy task.
If not then take a look at this site to get some ideals

http://www.selectdigitals.com/Documents/Articles/template/index.html

nomad