Hi everyone

I was wondering if anyone can suggest the best way to go about the following:

I have about 12 checkboxes. When a checkbox is click the corresponding drop down menu's appear.
There are about 9 drop down menu options in total.

So for example if checkbox 1 is clicked - drop down menus 1, 2, 5 and 6 appear
if checkbox 2 is clicked - drop down menus 2, 3, 4, 5 and 6 appear and so on....

I have done a simple show and hide div but this doesn't work as I have duplicated the drop down menu so the server side code doesn't work and no data is retrieved.

Whats the best way to achieve this?
if checkbox 1 is clicked - drop down menus 1, 2, 5 and 6 appear
if checkbox 2 is clicked - drop down menus 2, 3, 4, 5 and 6 appear
if checkbox 3 is clicked - drop down menus 1, 2, 6 and 12 appear
if checkbox 4 is clicked - drop down menus 1, 2, 3, 4 ,5, 6 and 11 appear ...etc...

The drop down menu are dynamic as well and I am using PHP.

Hope someone can direct me the best way to do this?

Many thanks