im trying to hide a div with a select option 

with all browsers works fine except firefox, that browser hide all the div except the select option 

the div im trying to hide its the details of the products of my catalog

i wat to know how to fix that please help 

the URL is  http://accazteca.byethost8.com/catcat.php?q=034-

Sorry with the writing mistakes my english its to bad :S