when the mouse is on the second thumb, will the big picture change?

[sumsonchen]

For example my link is http://www.weixin-china.com/products/promotional-bracelet/super-thin-silicone-bracelet-with-narrow-band-detail.html
There is two photos on the flypage, when I put my mouse on the second thumb, the big photo could not be change.
Is it a bug?

[attachment cleanup by admin]

[John2400]

Your images and picture appear to work perfectly?
You need to click on your thumbnail and a larger image appears?
Your site coding is so good I'm wondering how you missed that ?
This is not a thumbnail roll over.

?