fancybox-left and faccybox-right jquery codes

[suraty]

Hello
I am using the Joomla version3 and virtuemart3.
On the product detail page, there is vm-product-media-container class and the main image of the product displayed in it. Additional images are listed at the bottom of the main image as small pictures.
The click event of the main image is displayed it in a fancy box. For moving between additional images there are tiny fancy icons in the left and right of the fancy box.
On our site, anything is right to left. The float is set as right.
The main image is right of the page and additional images are listed right to the left of the bottom of the main image.
I want to change the fancy icons event suitable for the right to the left setting.
How can I do it?
Where can I find jquery codes of fancy icons?
I am a beginner and I need to your step-by-step help.
Thank you very much