hide() not working in IE

Question

My code works perfect in firefox and gives error in IE. any ideas?

I have a dropdown with various options, I am trying to show/hide options in another dropdown based on

Answer 1

Sadly, you just can't.
IE don't support hide of individual options in a select, neither Chrome or Opera. This feature isn't cross browser.

What you can do is remove the option and add it again later...