Holding Down the Mouse

Is there any way of making something move when the mouse is held down on it (a button)? I am doing a custom scroll thing for my website.

Please Help :b:

Benji

Btw, the code is as follows at the moment:

on (release) {
 intro.scroll -= 2;

}

For the Up Scroll Button. I want to change the (release) to something else, the behaviour that lets you hold down the mouse…

Thanks

Benji…again… :ko: