magento html fixing

Avg Bid (USD)
Project Budget (USD)
$30 - $50

Project Description:
i want to fix this script error, this site is built with magento, but has error in the zoom in zoom out script, please fix this

this is the url

Additional Project Description:
05/25/2012 at 9:57 SAST
the html file is here, please let us know if you can fix this

Skills required:
HTML, Javascript, jQuery / Prototype, Magento
Additional Files: image001.jpg error.rar
About the employer:
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.