This goes no where. If you don't have JavaScript knowledge, it is impossible that you will make it work, i can't help you remotely.
I shouldn't even mentioned a single word about "mouseWheel" plugin implementation in the first place. I can't provide you any further support it, because it is 100% custom modification.
About the performance thing, please read my topic again (more carefully):
www.flexiblewebdesign.com/forum-virtuemart-template-support/2730-zoom-effects-inner-and-load-time#11982
there is nothing can be done about it as well, i have provided the numbers that i took from our Live Demo. Run your own tests for this page:
demo.flexiblewebdesign.com/cleanmart/index.php/vm-categories/default-layout
the server-response-time is around ~1.2, If i enable the cache, it will even be lower (but we don't enable cache in our Live Demo). There are 16 x 3 = 48 products in that category page (gridView, MultiView, ListView) they all load 16 products, so total is 48 and all products have ~3 product additional pictures,(our live demo is displaying additional pictures as well). So all in all, the load is big!! But still; the waiting time is around ~1.2, it is also 1.2 in your website with only 4 products with 4 pictures.
Isn't that suspicious?
With using the default Virtuemart, OF COURSE your website will load faster, (the other way would be absurd) because official VM is simple, simpler than the simple. your Joomla template overall simple as well (all YooTheme templates are simple; they don't offer complicated feature -- especially the old ones), so there is nothing to push your server's limit. (except CleanMart), once CleanMart gets involved, your server is simply failing, it double the speed.
You should contact your hosting provider and ask them why their server's CPU are so poor. They will probably tell you the same things. If you want to drop your server-response time below 1 second with CleanMart; you have to do one or more;
1- Use dedicated hosting (relatively expensive option)
2- Dig into PHP code and delete every function, or any single code snippet that you don't use. Usually templates come with many different things, but people usually use only some of them, sometimes less than half. If you eliminate the features or functionalities that you are not using (and won't use); this cleaning will let you get serious performance improvements.
3- Enable Joomla Cache and never ever use any 3rd party extension for caching, they are all sucks. Joomla core cache is the best!
4- Use advanced cache (contact your hosting provider to ask for available advanced cache methods -- Memcached, XCache etc..)
5- Make sure your hosting is using FastCGI and PHP5.4+
6- USe
gtmetrix.com/ to analyze your website and do all the "suggestion"
7- Make sure your website is served via GZIP
8 - Jump to at least VPS hosting with at least 2GB dedicated RAM (from a trusted hosting company --
There are companies that sell VPS hosting for $4/month, this is simply bullshit-- no way they can sell VPS with this low price -- avoid from those hosting companies.
These all i can see about it. I am sorry but i have to close this topic and end this discussion because this topic has started going beyond it's purpose. This is not a "discussion" forum, this is our support ticket area.
Regards.