Product image quality

[z1k13]

Hello.
I am currently working on a weebly e-commerce site with the theme "Olivia Misa - Paper".
I have a problem with the images produced.
I find that the quality is not good unless clicking on the image which is displayed in rollover.
Is there a solution ?

You can find an exemple on this page :

http://www.crnb-concept.com/store/p25/Body_Royals_Perez_-_Jersey_Base-Ball_.html

Thank you in advance.

Sorry for my English, I'm French.

[Queso]

Hello!

It looks to be displaying normally from here, though that may be up to resolution. Are you able to post a screenshot comparison?