Hi i have a button when clicked scrolls down a dynamic text field. How do i make it so when the mouse hovers on it scrolls continously

i tried

while(_root.down_btn.onRollOver) {

txtInfo.scroll += 1

}

but that didn't work


Thx

NOTE: This is a one frame movie and i tried doing onEnterFrame and the rollover thing 2gever but that didn't work