2 Questions - 1.About Button Actions - 2.About Variables

1 - About Button Actions

Can’t we attain 2 Button actions at the same time for example

 
on (rollOver) {
 
  do something;
 
}
 
on (release) {
 
  do something else;
 
}

this does not work for me, is there a way to do it. Or should i do it with seperate buttons?

2 - Variables

Most of the time i am using loadMovie in my project, but if i am to store the data in a variable. How can i use it in loadMovie

for example;

I want to load movie1.swf

And i keep movie1 in a variable named variable

Now how do i load movie1.swf with using the variable and loadMovie function?