Mac wierd problem

Hi all,

Fisrt of all thanks a lot for helping me. I am facing some wierd problem on Mac.
I have a flash file placed in the div in html & on that div I have placed one more div tag with apartment search form which includes textboxes. This page is compatible in all browser but whenever I click textboxes in mac machine the apartment search, div tag disappears.

Can you please let me know the solution on this.
Thanks,
Amrapali

Does the same thing happen in all browsers on a Mac? Is it a newer Mac?