root.main.pop_mc.visible = false;
here i know root is the main time line , pop_mc is one of the movie clip with instance name "pop_mc" but I did not understand for what purpose "main" is used, I have no symbole with the name of main. but I have layer with the name of "main"
That's AS3 code, not AS2. As you seem to understand, that code would mean that there is some container of some sort with an instance name "main" that sits on the main timeline that contains something called "pop_mc". If this is an AS2 file, that code isn't doing anything.
ok let me search that "main" intance. I do not where it hide. I will find him.
Ya you are right , I found it.