Remove (not Disable And Not Delete) An Option In A "select" List

Nov 29, 2010

Is there a way to remove (not disable and not delete) an option in a "select" list, and restore it later when needed?

I have a form with many huge lists ("select" with many "options") that depend on eachother. I am dynamically updating the form through server, and wish to update the list values by sending a mask string. This way I could remove and restore the options without the need to pass the whole list again.

I tried many ways but none work:
* option.diabled="disabled" is not good because it is still shown
* option.style.visibility='hidden' is not good because it is still taking a row
* option=null is not good because I will not be able to restore it

I need a method similar to the following one for remove/add fields in a form:

remove:
<field>.style.display='none';
restore:
<field>.style.display=block';

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