Help getting rollover listners to work in a scroll pane

There are a couple of things you need to attend to.  First, you need to wait until the scrollpane has loaded its content before you can try to assign code to anything within it.  Second, you need to target the button (Sel) via the scrollpane's content property ("sp" is the instance name of the scrollpane in the example below)...

selectionTxt._visible = false;

var listenerObject:Object = new Object();

listenerObject.complete = function(eventObject:Object) {
      sp.content.Sel.onRollOver = function()
      {
            selectionTxt._visible = true;
      }

      sp.content.Sel.onRollOut = function()
      {
            selectionTxt._visible = false;
      }
};

sp.addEventListener("complete", listenerObject);

Note:  The code, scrollpane, and selectionTxt are all on the main timeline.